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RUB, MarquardProf. Dr. Alexander Hartmaier
ICAMS
Ruhr-Universität Bochum
IC 02-517
Universitätsstr. 150
44801 Bochum
Tel.: +49 234 32 29314
E-Mail: alexander.hartmaier@rub.de
Research
Bridging the scale: Atoms, microstructures, properties.
ICAMS 2020
Research Focus: Micromechanical and scalebridging modeling of plastic deformation, fracture and fatigue of materials, micro- and nanomechnical testing, crystal plasticity methods and parameter identification, precision machining and wear of metals Materials: All structural materials: steels, superalloys, aluminium alloys, copper alloys, composites Methods: Ab initio methods, Molecular Dynamics, Dislocation Dynamics, Crystal Plasticity, Finite Element Analysis, Machine Learning
Competences
Micromechanical simulation
Prediction of macroscopic materials behaviour
Dislocation dynamics
Large-scale atomistic simulation
- H. Sajjad, T. Chudoba, A. Hartmaier, A. Chakrabarty
Inverse method to determine parameters for time-dependent and cyclic plastic material behavior from instrumented indentation tests. Materials, 17, 3938, (2024) - A. Nammalvar Raja Rajan, M. Krochmal, T. Wegener, A. Hartmaier, et al.
Micro-macro modeling of tensile behavior of a friction stir welded hybrid joint of AlSi10Mg parts produced by powder bed fusion and casting. Welding in the World, 68, 1693-1705, (2024) - M. Pan, X. Chen, M. He, Y. Du, et al.
Optimizing fatigue performance in gradient structural steels by manipulating the grain size gradient rate. Materials, 17, 3210, (2024) - S. Hamdani, S. Abdeslam, A. Hartmaier, R. Janisch
Atomistic simulation of the influence of semi-coherent interfaces in the V/Fe bilayer system on plastic deformation during nanoindentation. Modelling and Simulation in Materials Science and Engineering, 32, 045012, (2024) - R. Shoghi, A. Hartmaier
A machine learning constitutive model for plasticity and strain hardening of polycrystalline metals based on data from micromechanical simulations. Machine Learning: Science and Technology, 5, 025008, (2024) - S. Hamdani, S. Abdeslam, A. Hartmaier, R. Janisch
Atomistic simulation of the influence of semi-coherent interfaces in the V/Fe bilayer system on plastic deformation during nanoindentation. Modelling and Simulation in Materials Science and Engineering, 32, 045012, (2024) - A. Nammalvar Raja Rajan, M. Krochmal, T. Wegener, A. Hartmaier, et al.
Micro-macro modeling of tensile behavior of a friction stir welded hybrid joint of AlSi10Mg parts produced by powder bed fusion and casting. Welding in the World, 68, 1693–1705, (2024) - S. Li, L. Shi, Ji. Chen, X. Yang, et al.
Effect of hierarchical martensitic microstructures on the ductile-brittle transition behavior of friction stir welded reduced activation ferritic/martensitic steel. Materials Science and Engineering: A, 896, 146324, (2024) - R. Shoghi, L. Morand, D. Helm, A. Hartmaier
Optimizing machine learning yield functions using query-by-committee for support vector classification with a dynamic stopping criterion. Computational Mechanics, 73, 1-20, (2024) - J. Schmidt, A. Hartmaier
A texture-dependent yield criterion. 11th GAMM AG Data Workshop TU Dresden February 06/07, 2024, 18, (2024) - J. Schmidt, A. Hartmaier
A new texture descriptor for data-driven constitutive modeling of anisotropic plasticity. Journal of Materials Science, 58, 14029–14050, (2023) - G. Eshlaghi, G. Egels, S. Benito, M. Stricker, et al.
Three-dimensional microstructure reconstruction for two-phase materials from three orthogonal surface maps. Frontiers in Materials, 10, 1-17, (2023) - A. Nammalvar Raja Rajan, M. Krochmal, M. Shahmardani, T. Wegener, et al.
Micromechanical modeling of the low-cycle fatigue behavior of additively manufactured AlSi10Mg. Materials Science and Engineering: A, 2023, 145232, (2023) - M. Shahmardani Firouzjah, R. Logvinov, T. Babinský, S. Guth, et al.
Experimental assessment and micromechanical modeling of additively manufactured austenitic steels under cyclic loading. Advanced Engineering Materials, 25, 2300103, (2023) - S. Benito, G. Egels, A. Hartmaier, S. Weber
Statistical characterization of segregation-driven inhomogeneities in metallic microstructures employing fast first-order variograms. Materials Today Communications, 34, 105016, (2023) - A. Biswas, D. Kurtulan, T. Ngeru, A. Azócar Guzmán, et al.
Mechanical behavior of austenitic steel under multi-axial cyclic loading. Materials, 16, 1367, (2023) - L. Zhao, J. Zhang, J. Zhang, H. Dai, et al.
Numerical simulation of materials-oriented ultra-precision diamond cutting: review and outlook. International Journal of Extreme Manufacturing, 5, 022001, (2023) - M. Shahmardani Firouzjah, A. Hartmaier
Microstructure-sensitive crystal plasticity modeling for austenitic steel and nickel-based superalloy under isothermal fatigue loading. Metallurgical and Materials Transactions A, Jan 2023, 1-12, (2023) - L. Zhao, J. Zhang, Y. Fu, J. Zhang, et al.
Thermal softening-suppressed inter-granular embrittlement of polycrystalline 3C-SiC under diamond cutting. Materials & Design, 223, 111250, (2022) - L. Zhao, J. Zhang, J. Zhang, A. Hartmaier, T. Sun
Formation of high density stacking faults in polycrystalline 3C-SiC by vibration-assisted diamond cutting. Journal of the European Ceramic Society, 42, 5448-5457, (2022) - A. Nammalvar Raja Rajan, M. Krochmal, T. Wegener, A. Biswas, et al.
Micromechanical modeling of AlSi10Mg processed by laser-based additive manufacturing: from as-built to heat-treated microstructures. Materials, 15, 5562, (2022) - J. Schmidt, A. Biswas, N. Vajragupta, A. Hartmaier
Data-oriented description of texture-dependent anisotropic material behavior. Modelling and Simulation in Materials Science and Engineering, 30, 065001, (2022) - M. Ramaswamy Guru Prasad, A. Biswas, N. Vajragupta, A. Hartmaier
Identification of texture characteristics for improved creep behavior of a L-PBF fabricated IN738 alloy through micromechanical simulations. Modelling and Simulation in Materials Science and Engineering, 30, 055007, (2022) - R. Shoghi, A. Hartmaier
Optimal data-generation strategy for machine learning yield functions in anisotropic plasticity. Frontiers in Materials, 9, 879614154, (2022) - A. Biswas, S. Kalidindi, A. Hartmaier
A hybrid approach for the efficient computation of polycrystalline yield loci with the accuracy of the crystal plasticity finite element method. Modelling and Simulation in Materials Science and Engineering, 30, 025015, (2022) - S. Li, N. Vajragupta, A. Biswas, W. Tang, et al.
Effect of microstructure heterogeneity on the mechanical properties of friction stir welded reduced activation ferritic/martensitic steel. Scripta Materialia, 207, 114306, (2022) - H. Li, X. Wang, J. Zhang, B. Wang, et al.
Experimental investigation of laser surface texturing and related biocompatibility of pure titanium. The International Journal of Advanced Manufacturing Technology, 119, 5993–6005, (2022) - M. Shahmardani Firouzjah, N. Vajragupta, A. Hartmaier
Influence of crystal plasticity parameters on the strain hardening behavior of polycrystals. Crystals, 11, 1473, (2021) - M. Shahmardani Firouzjah, A. Hartmaier
Constitutive modeling of cyclic plasticity at elevated temperatures for a nickel-based superalloy. International Journal of Fatigue, 151, 106353, (2021) - M. Alam, L. Zhao, N. Vajragupta, J. Zhang, A. Hartmaier
Finite element modeling of brittle and ductile modes in cutting of 3C-SiC. Crystals, 11, 1286, (2021) - S. Li, X. Yang, N. Vajragupta, W. Tang, et al.
The influence of post-weld tempering temperatures on microstructure and strength in the stir zone of friction stir welded reduced activation ferritic/martensitic steel. Materials Science and Engineering: A, 814, 141224, (2021) - M. Ramaswamy Guru Prasad, A. Neogi, N. Vajragupta, R. Janisch, A. Hartmaier
Influence of temperature on void collapse in single crystal nickel under hydrostatic compression. Materials, 14, 2369, (2021) - D. Tian, Z. Xu, L. Liu, Z. Zhou, et al.
In situ investigation of nanometric cutting of 3C-SiC using scanning electron microscope. The International Journal of Advanced Manufacturing Technology, 115, 2299–2312, (2021) - J. Wu, W. Liu, N. Vajragupta, A. Hartmaier, J. Lian
A numerical investigation on the effects of porosity on the plastic anisotropy of additive manufactured stainless steel with various crystallographic textures. ESAFORM 2021, (2021) - S. Lu, J. Zhang, Z. Li, J. Zhang, et al.
Cutting path-dependent machinability of SiCp/Al composite under multi-step ultra-precision diamond cutting. Chinese Journal of Aeronautics, 34, 241-252, (2021) - L. Zhao, J. Zhang, J. Zhang, A. Hartmaier
Atomistic investigation of machinability of monocrystalline 3C–SiC in elliptical vibration-assisted diamond cutting. Ceramics International, 47, 2358-2366, (2021) - J. Wu, Z. Wu, L. Liu, A. Hartmaier, et al.
MD simulation study on defect evolution and doping efficiency of p-type doping of 3C-SiC by Al ion implantation with subsequent annealing. Journal of Materials Chemistry C, 7, 2258-2275, (2021) - L. Zhao, J. Zhang, J. Pfetzing, M. Alam, A. Hartmaier
Depth-sensing ductile and brittle deformation in 3C-SiC under Berkovich nanoindentation. Materials & Design, 197, 109223, (2021) - S. Iseni, M. Ramaswamy Guru Prasad, A. Hartmaier, K. Holeczek, et al.
Micro-, macromechanical and aeroelastic investigation of glass-fiber based, lightweight turbomachinery components. Asme Turbo Expo 2020: Power for land, sea and air, 10A Structures and Dynamics, (2021) - Z. Wang, J. Zhang, A. Ma, A. Hartmaier, et al.
On the crystallographic anisotropy of plastic zone size in single crystalline copper under Berkovich nanoindentation. Materials Today Communications, 25, 101314, (2020) - M. Ramaswamy Guru Prasad, S. Gao, N. Vajragupta, A. Hartmaier
Influence of trapped gas on pore healing under hot isostatic pressing in nickel-base superalloys. Crystals, 10, 1147, (2020) - Z. Wang, J. Zhang, A. Ma, A. Hartmaier, et al.
On the crystallographic anisotropy of plastic zone size in single crystalline copper under Berkovich nanoindentation. Materials Today Communications, 25, 101314, (2020) - A. Azócar Guzmán, J. Jeon, A. Hartmaier, R. Janisch
Hydrogen embrittlement at cleavage planes and grain boundaries in bcc iron—revisiting the first-principles cohesive zone model. Materials, 13, 5785, (2020) - C. Bonnekoh, J. Reiser, A. Hartmaier, S. Bonk, et al.
The brittle-to-ductile transition in cold-rolled tungsten sheets: the rate-limiting mechanism of plasticity controlling the BDT in ultrafine-grained tungsten. Journal of Materials Science, 55, 12314–12337, (2020) - A. Neogi, M. Alam, A. Hartmaier, R. Janisch
Anisotropic failure behavior of ordered intermetallic TiAl alloys under pure mode-I loading. Modelling and Simulation in Materials Science and Engineering, 28, 065016, (2020) - M. Ali, I. Lopez-Galilea, W. Amin, S. Gao, et al.
Effect of γ′ precipitate size on hardness and creep properties of Ni-base single crystal superalloys: experiment and simulation. Materialia, 12, 100692, (2020) - M. Ramaswamy Guru Prasad, A. Biswas, W. Amin, S. Gao, et al.
Influence of pore characteristics on anisotropic mechanical behavior of L‐PBF manufactured metal by micromechanical modeling. Advanced Engineering Materials, 2000641, (2020) - H. Sajjad, H. Hassan, M. Kuntz, B. Schaefer, et al.
Inverse method to determine fatigue properties of materials by combining cyclic indentation and numerical simulation. Materials, Special Issue Recent Advances in Mechanisms of Fracture and Fatigue, 13, 3126, (2020) - Z. Wang, J. Zhang, G. Li, Z. Xu, et al.
Anisotropy‑related machining characteristics in ultra‑precision diamond cutting of crystalline copper. Nanomanufacturing and Metrology, 3, 123–132, (2020) - L. Zhao, M. Alam, J. Zhang, R. Janisch, A. Hartmaier
Amorphization-governed elasto-plastic deformation under nanoindentation in cubic (3C) silicon carbide. Ceramics International, 46, 12470–12479, (2020) - Z. Wang, J. Zhang, Z. Xu, J. Zhang, et al.
Crystal anisotropy-dependent shear angle variation in orthogonal cutting of single crystalline copper. Precision Engineering, 63, 41-48, (2020) - A. Biswas, M. Ramaswamy Guru Prasad, N. Vajragupta, A. Kostka, et al.
Effect of grain statistics on micromechanical modeling: the example of additively manufactured materials examined by electron backscatter diffraction. Advanced Engineering Materials, 22, 1901416, (2020) - A. Hartmaier
Data-oriented constitutive modeling of plasticity in metals. Materials, 13, 1600, (2020) - N. Vajragupta, S. Maassen, T. Clausmeyer, D. Brands, et al.
Micromechanical modeling of DP600 steel: from microstructure to the sheet metal forming process. Procedia Manufacturing, 47, 1540-1547, (2020) - S. Gao, M. Ali, A. Hartmaier
Influence of rafted microstructures on creep in Ni-base single crystal superalloys: a 3D discrete dislocation dynamics study. Modelling and Simulation in Materials Science and Engineering, 28, 025001, (2020) - A. Biswas, M. Ramaswamy Guru Prasad, N. Vajragupta, A. Hartmaier
Kanapy: synthetic polycrystalline microstructure generator with geometry and texture. Zenodo Repository, (2020) - J. Reiser, A. Hartmaier
Elucidating the dual role of grain boundaries as dislocation sources and obstacles and its impact on toughness and brittle-to-ductile transition. Scientific Reports, 10, 2739, (2020) - Z. Wang, J. Zhang, J. Zhang, G. Li, et al.
Towards an understanding of grain boundary step in diamond cutting of polycrystalline copper. Journal of Materials Processing Technology, 276, 116400, (2020) - Z. Xu, F. Fang, L. Liu, Z. He, et al.
Nanocutting mechanism of 6H-SiC investigated by scanning electron microscope online observation and stress-assisted and ion implant-assisted approaches. The International Journal of Advanced Manufacturing Technology, 106, 3869–3880, (2020) - M. Shahmardani Firouzjah, N. Vajragupta, A. Hartmaier
Robust optimization scheme for inverse method for crystal plasticity model parametrization. Materials, 13, 735, (2020) - A. Biswas, N. Vajragupta, R. Hielscher, A. Hartmaier
Optimized reconstruction of the crystallographic orientation density function based on a reduced set of orientations. Journal of Applied Crystallography, 53, 178-187, (2020) - Z. Wang, T. Sun, H. Zhang, G. Li, et al.
The interaction between grain boundary and tool geometry in nanocutting of a bi-crystal copper. International Journal of Extreme Manufacturing, 1, 045001, (2019) - D. Matschkal-Amberger, M. Kolb, S. Neumeier, S. Gao, et al.
New flat-punch indentation creep testing approach for characterizing the local creep properties at high temperatures. Materials & Design, 183, 108090, (2019) - B. Schaefer, P. Sonnweber-Ribic, H. Hassan, A. Hartmaier
Micromechanical modeling of fatigue crack nucleation around non-metallic inclusions in martensitic high-strength steels. Metals, 9, 1258, (2019) - M. Ramaswamy Guru Prasad, N. Vajragupta, A. Hartmaier
Kanapy: a Python package for generating complex synthetic polycrystalline microstructures. Journal of Open Source Software, 4, 1732, (2019) - J. Engels, N. Vajragupta, A. Hartmaier
Parameterization of a non-local crystal plasticity model for tempered lath martensite using nanoindentation and inverse method. Frontiers in Materials, 6, 247, (2019) - M. Boeff, H. Hassan, A. Hartmaier
On the numerical modeling of nucleation and growth of microstructurally short cracks in polycrystals under cyclic loading. Journal of Materials Research, 34, 3523-3534, (2019) - W. Amin, M. Ali, N. Vajragupta, A. Hartmaier
Studying grain boundary strengthening by dislocation-based strain gradient crystal plasticity coupled with a multi-phase-field model. Materials, 12, 2977, (2019) - B. Schaefer, P. Sonnweber-Ribic, A. Hartmaier
Micromechanical modelling of the influence of strain ratio on fatigue crack initiation in a martensitic steel. Materials, 12, 2852, (2019) - D. Reimann, K. Nidadavolu, H. Hassan, N. Vajragupta, et al.
Modeling macroscopic material behavior with machine learning algorithms trained by micromechanical simulations. Frontiers in Materials, 6, 181, (2019) - A. Biswas, M. R. G. Prasad, N. Vajragupta, H. Hassan, et al.
Influence of microstructural features on the strain hardening behavior of additively manufactured metallic components. Advanced Engineering Materials, 21, 1900275, (2019) - Z. Wang, H. Zhang, Z. Li, G. Li, et al.
Crystal plasticity finite element simulation and experiment investigation of nanoscratching of single crystalline copper. Wear, 430-431, 100-107, (2019) - L. Liu, Z. Xu, D. Tian, A. Hartmaier, et al.
MD simulation of stress-assisted nanometric cutting mechanism of 3C silicon carbide. Industrial Lubrication and Tribology, 71, 686-691, (2019) - S. Gao, Z. Yang, M. Grabowski, J. Rogal, et al.
Influence of excess volumes induced by Re and W on dislocation motion and creep in Ni-base single crystal superalloys: a 3D discrete dislocation dynamics study. Metals, 9, 637, (2019) - H. Sajjad, S. Hanke, Sedat Güler , H. Hassan, et al.
Modelling cyclic behaviour of martensitic steel with J2 plasticity and crystal plasticity. Journal of Materials MDPI, 12, 1767, (2019) - B. Schaefer, X. Song, P. Sonnweber-Ribic, H. Hassan, A. Hartmaier
Micromechanical modelling of the cyclic deformation behavior of martensitic SAE 4150—a comparison of different kinematic hardening models. Metals, 9, 368, (2019) - B. J. Schäfer, X. Song, P. Sonnweber-Ribic, H. Hassan, A. Hartmaier
Micromechanical modelling of the cyclic deformation behavior of martensitic SAE 4150—a comparison of different kinematic hardening models. Metals, 9, 368, (2019) - A. Subramanyam, A. Azócar Guzmán, S. Vincent, A. Hartmaier, R. Janisch
Ab initio study of the combined effects of alloying elements and H on grain boundary cohesion in ferritic steels. Metals, 9, 291, (2019) - C. Bonnekoh, U. Jäntsch, J. Hoffmann, H. Leiste, et al.
The brittle-to-ductile transition in cold rolled tungsten plates: impact of crystallographic texture, grain size and dislocation density on the transition temperature. International Journal of Refractory Metals and Hard Materials, 78, 146-163, (2019) - Z. Wang, J. Zhang, Z. Xu, J. Zhang, et al.
Crystal plasticity finite element modeling and simulation of diamond cutting of polycrystalline copper. Journal of Manufacturing Processes, 38, 187-195, (2019) - T. Schaffner, A. Hartmaier, M. Pohl
Prediction of the hydrogen-induced damage to ultra-high strength steel concepts. Materials Science Forum, 941, 124-129, (2018) - S. Gupta, A. Ma, A. Hartmaier
Mechanical twinning induced alteration in the kinetics of martensitic phase transformation in TRIP-maraging steels. International Journal of Solids and Structures, 155, 213-224, (2018) - J. Möller, E. Bitzek, R. Janisch, H. ul Hassan, A. Hartmaier
Fracture ab initio: A force-based scaling law for atomistically informed continuum models. Journal of Materials Research, 33, 3750 - 3761, (2018) - H. Hassan, K. Govind, A. Hartmaier
Micromechanical modelling of coupled crystal plasticity and hydrogen diffusion. Philosophical Magazine, 99, 92-115, (2018) - Z. Wang, J. Zhang, H. Hassan, J. Zhang, et al.
Coupled effect of crystallographic orientation and indenter geometry on nanoindentation of single crystalline copper. International Journal of Mechanical Sciences, 148, 531–539, (2018) - J. Engels, S. Gao, W. Amin, A. Biswas, et al.
Indentation size effects in spherical nanoindentation analyzed by experiment and non-local crystal plasticity. Materialia, 3, 21-30, (2018) - Z. Xu, Z. He, Y. Song, X. Fu, et al.
Topic Review: Application of Raman spectroscopy characterization in micro/nano-machining. Micromechanics, 2018, 361, (2018) - G. Eggeler, P. Wollgramm, K. Neuking, J. Schreuer, et al.
On shear testing of single crystal Ni-base superalloys. Metallurgical and Materials Transactions A, 49, 3951-3962, (2018) - S. Gao, P. Wollgramm, G. Eggeler, A. Ma, et al.
A phenomenological creep model for nickelbase single crystal superalloys at intermediate temperatures. Modelling and Simulation in Materials Science and Engineering, 26, 055001, (2018) - X. Fu, Z. Xu, Z. He, A. Hartmaier, F. Fang
Molecular dynamics simulation of silicon ion implantation into diamond and subsequent annealing. Nuclear Instruments and Methods in Physics Research B, (2018) - T. Schaffner, A. Hartmaier, V. Kokotin, M. Pohl
Analysis of hydrogen diffusion and trapping in ultra-high strength steel grades. Journal of Alloys and Compounds, 746, 557-566, (2018) - Z. Zhang, J. Cui, B. Wang, H. Jiang, et al.
In situ TEM observation of rebonding on fractured silicon carbide. Nanoscale, 10, 6261-6269, (2018) - S. Gao, U. Gogilan, A. Ma, A. Hartmaier
Numerically efficient microstructure-based calculation of internal stresses in superalloys. Modelling and Simulation in Materials Science and Engineering, 26, 025001, (2017) - N. Vajragupta, H. Hassan, A. Hartmaier
Towards prediction of springback in deep drawing using a micromechanical modeling scheme. Procedia Engineering, 207, 60-65, (2017) - M. Boeff, H. Hassan, A. Hartmaier
Micromechanical modeling of fatigue crack initiation in polycrystals. Journal of Materials Research, 32, 4375-4386, (2017) - M. Kanani, A. Hartmaier, R. Janisch
The shear instability energy: A new parameter for materials design?. Modelling and Simulation in Materials Science and Engineering, 25, 075009, (2017) - N. Vajragupta, S. Ahmed, M. Boeff, A. Ma, A. Hartmaier
Micromechanical modeling approach to derive the yield surface for BCC and FCC steels using statistically informed microstructure models and nonlocal crystal plasticity. Physical Mesomechanics, 20, 100-108, (2017) - M. Kulosa, M. Neumann, M. Boeff, G. Gaiselmann, et al.
A study on microstructural parameters for the characterization of granular porous ceramics using a combination of stochastic and mechanical modeling. International Journal of Applied Mechanics, 09, 1750069, (2017) - J. Zhang, A. Hartmaier, T. Sun, J. Zhang, et al.
Interaction between phase transformations and dislocations at incipient plasticity of monocrystalline silicon under nanoindentation. Computational Materials Science, 131, 55 - 61, (2017) - A. Hartmaier
Vom Atom zum Bauteil und zurück. Physik in unserer Zeit, 48, 190-197, (2017) - S. Gao, M. Fivel, A. Ma, A. Hartmaier
3D discrete dislocation dynamics study of creep behavior in Ni-base single crystal superalloys by a combined dislocation climb and vacancy diffusion model. Journal of the Mechanics and Physics of Solids, 102, 209-223, (2017) - D. Guedes, S. Barrez, F. Thébault, P. Schwittek, et al.
Modeling and experimental insights of sulfide stress cracking corrosion mechanism. NACE International Corrosion 2017 Conference Proceedings, 9328, (2017) - A. Ma, A. Hartmaier
A crystal plasticity smooth-particle hydrodynamics approach and its application to equalchannel angular pressing simulation. Modelling and Simulation in Materials Science and Engineering, 24, 085011, (2016) - H. Hassan, F. Maqbool, A. Güner, A. Hartmaier, et al.
Springback prediction and reduction in deep drawing under influence of unloading modulus degradation. International Journal of Material Forming, 9, 619–633, (2016) - R. Scholz, R.-M. Mittendorf, J. Engels, A. Hartmaier, et al.
Direction-dependent mechanical characterization of cellulose-based composite vulcanized fiber. Materials Testing, 58, 813-817, (2016) - R. Sivanesapillai, N. Falkner, A. Hartmaier, H. Steeb
A CSF-SPH method for simulating drainage and imbibition at pore-scale resolution while tracking interfacial areas. Advances in Water Resources, 1, 212-234, (2016) - E. Borukhovich, G. Du, M. Stratmann, M. Boeff, et al.
Microstructure design of tempered martensite by atomistically informed full-field simulation: From quenching to fracture. Materials, 9, 673, (2016) - B. Reinholz, S. Brinckmann, A. Hartmaier, B. Muntifering, et al.
Influence of the twin microstructure on the mechanical properties in magnetic shape memory alloys. Acta Materialia, 108, 197-206, (2016) - M. Kanani, A. Hartmaier, R. Janisch
Stacking fault based analysis of shear mechanisms at interfaces in lamellar TiAl alloys. Acta Materialia, 106, 208-218, (2016) - X. Pang, R. Janisch, A. Hartmaier
Interplanar potential for tension-shear coupling at grain boundaries derived from ab initio calculations. Modelling and Simulation in Materials Science and Engineering, 24, 015007, (2016) - T. Wang, C. Begau, G. Sutmann, A. Hartmaier
Large scale molecular dynamics simulation of microstructure formation during thermal spraying of pure copper. Surface and Coatings Technology, 280, 72-80, (2015) - M. Boeff, F. Gutknecht, P. Engels, A. Ma, A. Hartmaier
Formulation of nonlocal damage models based on spectral methods for application to complex microstructures. Engineering Fracture Mechanics, 147, 373-387, (2015) - S. Gao, M. Rajendran, M. Fivel, A. Ma, et al.
Primary combination of phase-field and discrete dislocation dynamics methods for investigating athermal plastic deformation in various realistic Ni-base single crystal superalloy microstructures. Modelling and Simulation in Materials Science and Engineering, 23, 075003, (2015) - J. Zhang, C. Begau, L. Geng, A. Hartmaier
Atomistic investigation of wear mechanisms of a copper bi-crystal. Wear, 332-333, 941-948, (2015) - S. Gupta, A. Ma, A. Hartmaier
Investigating the influence of crystal orientation on bending size effect of single crystal beams. Computational Materials Science, 101, 201-210, (2015) - S. Gao, M. Fivel, A. Ma, A. Hartmaier
Influence of misfit stresses on dislocation glide in single crystal superalloys: A three-dimensional discrete dislocation dynamics study. Journal of the Mechanics and Physics of Solids, 76, 276-290, (2015) - A. Ma, A. Hartmaier
A study of deformation and phase transformation coupling for TRIP-assisted steels. International Journal of Plasticity, 64, 40-55, (2015) - N. Vajragupta, P. Wechsuwanmanee, J. Lian, M. Sharaf, et al.
The modeling scheme to evaluate the influence of microstructure features on microcrack formation of DP-steel: the artificial microstructure model and its application to predict the strain hardening behavior. Computational Materials Science, 95, 198-213, (2014) - M. Kanani, A. Hartmaier, R. Janisch
Interface properties in lamellar TiAl microstructures from density functional theory. Intermetallics, 54, 154-163, (2014) - M. Sharaf, P. Kucharczyk, N. Vajragupta, S. Münstermann, et al.
Modeling the microstructure influence on fatigue life variability in structural steels. Computational Materials Science, 94, 258-272, (2014) - K. Chockalingam, R. Janisch, A. Hartmaier
Coupled atomistic-continuum study of the effects of C atoms at α-Fe dislocation cores. Modelling and Simulation in Materials Science and Engineering, 22, 075007, (2014) - M. Boeff, A. Ma, A. Hartmaier
Plastic deformation modelling of tempered martensite steel block structure by a nonlocal crystal plasticity model. Theoretical and Applied Mechanics Letters, 4, 051007, (2014) - R. Sivanesapillai, H. Steeb, A. Hartmaier
Transition of effective hydraulic properties from low to high Reynolds number flow in porous media. Geophysical Research Letters, 41, 4920-4928, (2014) - A. Tahir, R. Janisch, A. Hartmaier
Hydrogen embrittlement of a carbon segregated Σ5(310)[001] symmetrical tilt grain boundary in α-Fe. Material Science and Engineering A, 612, 462-467, (2014) - T. Wang, G. Madsen, A. Hartmaier
Atomistic study of the influence of lattice defects on the thermal conductivity of silicon. Modelling and Simulation in Materials Science and Engineering, 22, 035011, (2014) - P. Engels, C. Begau, S. Gupta, B. Schmaling, et al.
Multiscale modelling of nanoindentation: from atomistic to continuum models. Nanomechanical analysis of high performance materials, 203, 285-322, (2014) - A. Ma, A. Hartmaier
On the influence of isotropic and kinematic hardening caused by strain gradients on the deformation behaviour of polycrystals. Philosophical Magazine, 94, 125-140, (2014) - C. Begau, A. Hartmaier
Microstructural characterization of shape memory alloys on the atomic scale. TMS 2014 Supplemental Proceedings, 247-256, (2014) - A. Tahir, R. Janisch, A. Hartmaier
Ab initio calculation of traction separation laws for a grain boundary in molybdenum with segregated C impurites. Modelling and Simulation in Materials Science and Engineering, 21, 16, (2013) - J. Zhang, A. Hartmaier, Y. Wei, Y. Yan, T. Sun
Mechanisms of anisotropic friction in nanotwinned Cu revealed by atomistic simulations. Modelling and Simulation in Materials Science and Engineering, 21, 16, (2013) - M. Sharaf, J. Lian, N. Vajragupta, S. Münstermann, et al.
Influence of microstructural features on the propagation of microstructurally short fatigue cracks in structural steels. Fatigue of Materials II, 243-250, (2013) - J. Pfetzing-Micklich, C. Somsen, A. Dlouhy, C. Begau, et al.
On the crystallographic anisotropy of nanoindentation in pseudoelastic NiTi. Acta Materialia, 61, 602-616, (2013) - P. Engels, A. Ma, A. Hartmaier
Continuum simulation of the evolution of dislocation densities during nanoindentation. International Journal of Plasticity, 38, 159-169, (2012) - D. Mahajan, A. Hartmaier
Mechanisms of crazing in glassy polymers revealed by molecular dynamics simulations. Physical Review E, 86, 021802, (2012) - X. Pang, N. Ahmed, R. Janisch, A. Hartmaier
The mechanical shear behavior of Al single crystals and grain boundaries. Journal of Applied Physics, 112, 023503, (2012) - J. Zhang, T. Sun, A. Hartmaier, Y. Yan
Atomistic simulation of the influence of nanomachining-induced deformation on subsequent nanoindentation. Computational Materials Science, 59, 14-21, (2012) - A. Köster, A. Ma, A. Hartmaier
Atomistically informed continuum model for body centered cubic iron. Actra Materialia, 60, 3894-3901, (2012) - A. Köster, A. Ma, A. Hartmaier
Atomistically informed crystal plasticity model for body-centered cubic iron. Acta Materialia, 60, 3894–3901, (2012) - N. Vajragupta, V. Uthaisangsuk, B. Schmaling, S. Münstermann, et al.
A micromechanical damage simulation of dual phase steels using XFEM. Computational Materials Science , 54, 271-279, (2012) - A. Hartmaier
Large-scale molecular dynamics studies and scale-briding models for deformation and failure of materials. Hierarchical Methods for Dynamics in Complex Molecular Systems, 10, 107-114, (2012) - J. Zhang, W. Yujie, S. Tao, A. Hartmaier, et al.
Twin boundary spacing-dependent friction in nanotwinned copper. Physical Review B, 85, 5, (2012) - A. Ma, A. Hartmaier
Scale bridging modeling of plastic deformation and damage initiation in polycrystals. Polycrystalline materials - theoretical and practical aspects, 3-26, (2012) - B. Schmaling, A. Hartmaier
Determination of plastic material properties by analysis of residual imprint geometry of indentation. Journal of Materials Research, 27, 2167-2177, (2012) - S. Brinckmann, D. Mahajan, A. Hartmaier
A scheme to combine molecular dynamics and dislocation dynamics. Modelling and Simulation in Materials Science and Engineering, 20, 045001, (2012) - C. Begau, J. Hua, A. Hartmaier
A novel approach to study dislocation density tensors and lattice-rotation patterns in atomistic simulations. Journal of the Mechanics and Physics of Solids, 60, 711-722, (2012) - S. Brinckmann, R. Sivanesapillai, A. Hartmaier
On the formation of vacancies by edge dislocation dipole annihilation in fatigued copper. International Journal of Fatigue, 33, 1369-1375, (2011) - M. Lodes, A. Hartmaier, M. Göken, K. Durst
Influence of dislocation density on the pop-in behavior and indentation size effect in CaF(2) single crystals: Experiments and molecular dynamics simulations. Acta Materialia, 59, 4264-4273, (2011) - N. Ahmed, A. Hartmaier
Mechanisms of grain boundary softening and strain-rate sensitivity in deformation of ultrafine-grained metals at high temperatures. Acta Materialia, 59, 4323-4334, (2011) - M. A. Lodes, A. Hartmaier, M. Göken, K. Durst
Influence of dislocation density on the pop-in behavior and indentation size effect in CaF2 single crystals: Experiments and molecular dynamics simulations. Acta Materialia, 59, 4264-4273, (2011) - M. Prechtel, P. Leiva-Ronda, R. Janisch, A. Hartmaier, et al.
Simulation of fracture in heterogeneous elastic materials with cohesive zone models. International Journal of Fracture, 168, 15-29, (2011) - J. Pfetzing-Micklich, S. Brinckmann, S.J. Dey, F. Otto, et al.
Micro-shear deformation of pure copper. Materialwissenschaft und Werkstofftechnik, 42, 219-223, (2011) - C. Begau, A. Hartmaier, E.P. George, G.M. Pharr
Atomistic processes of dislocation generation and plastic deformation during nanoindentation. Acta Materialia, 59, 934-942, (2011) - E. Hristova, R. Janisch, R. Drautz, A. Hartmaier
Solubility of carbon in α-iron under volumetric strain and close to the Σ5(310)[001] grain boundary: Comparison of DFT and empirical potential methods. Computational Materials Science, 50, 1088-1096, (2011) - N. Ahmed, A. Hartmaier
A two-dimensional dislocation dynamics model of the plastic deformation of polycrystalline metals. Journal of the Mechanics and Physics of Solids, 58, 2054-2064, (2010) - R. Darvishi Kamachali, J. Hua, I. Steinbach, A. Hartmaier
Multiscale simulations on the grain growth process in nanostructured materials. International Journal of Materials Research, 11, 1332-1338, (2010) - J. Hua, A. Hartmaier
Determining Burgers vectors and geometrically necessary dislocation densities from atomistic data. Modelling and Simulation in Materials Science and Engineering, 18, 045007, (2010) - R. Janisch, N. Ahmed, A. Hartmaier
Ab initio tensile tests of Al bulk crystals and grain boundaries: universality of mechanical behaviour. Physical Review B, 81, 184108, (2010) - J. Pesicka, A. Aghajani, C. Somsen, A. Hartmaier, G. Eggeler
How dislocation substructures evolve during long-term creep of a 12% Cr tempered martensitic ferritic steel. Scripta Materialia, 62, 353-356, (2010) - G. Ziegenhain, H. Urbassek, A. Hartmaier
Influence of crystal anisotropy on elastic deformation and onset of plasticity in nanoindentation: A simulational study. Journal of Applied Physics, 107, 061807, (2010) - I. Steinbach, X. Song, A. Hartmaier
Phase-field model with plastic flow for grain-growth in nanocrystalline material. Philosophical Magazine, 90, 485-499, (2010) - X. Zeng, A. Hartmaier
Modeling size effects on fracture toughness by dislocation dynamics. Acta Materialia, 58, 301-310, (2010) - B. Schmaling, A. Ma, A. Hartmaier
Transformation induced plasticity modelling based on micromechanical approaches. MMM 2010 Conference Proceedings, 532-535, (2010) - A. Shaban, A. Ma, A. Hartmaier
Polycrystalline material deformation modeling with grain boundary sliding and damage accumulation. Proceedings of 18th European Conference on Fracture (ECF18), 250-257, (2010) - B. Eidel, A. Hartmaier, P. Gumbsch
Application of atomistic simulations for the investigation of fracture processes. Multiscale modelling of plasticity and fracture by means of dislocation mechanics, CISM International Centre for Mechanical Sciences, Courses and Lectures, 522, 1-58, (2010) - J. Hua, A. Hartmaier
Development of a method to determine Burgers vectors from atomistic data. Journal of Physics: Conference Series, 240, 012010, (2010) - G. Ziegenhain, A. Hartmaier, H. M. Urbassek
Pair vs many-body potentials: influence on elastic and plastic behavior in nanoindentation of fcc metals. Journal of the Mechanics and Physics of Solids , 57, 1514–1526 , (2009) - P. Armstrong, C. Knieke, M. Mackovic, G. Frank, et al.
Microstructural evolution during deformation of tin dioxide nanoparticles in a comminution process. Acta Materialia, 57, 3060–3071, (2009) - A. Böhner, R. Janisch, A. Hartmaier
Ab initio investigation of diamond coatings on steel. Scripta Materialia, 60, 504-507, (2009) - K. Higashida, M. Tanaka, A. Hartmaier, Y. Hoshino
Analyzing crack-tip dislocations and their shielding effect on fracture toughness. Materials Science and Engineering, A 483, 13-18, (2008) - D. Rupp, X. Zeng, S.M. Weygand, A. Hartmaier
Loading rate dependence of the fracture toughness of polycrystalline tungsten in the brittle and semi-brittle regime: experiments and modelling. Proceedings of 17th European Conference on Fracture (ECF17), 667, (2008) - M. Tanaka, Y. Hoshino, A. Hartmaier, K. Higashida
Crack tip dislocations and its shielding effect. Materials Science Forum, 561-565, 1833-1836, (2008) - N. C. Broedling, A. Hartmaier, M. J. Buehler, H. Gao
The strength limit in a bio-inspired metallic nanocomposite. Journal of the Mechanics and Physics of Solids, 56, 1086-1104 , (2008) - N. C. Broedling, A. Hartmaier, H. Gao
Fracture toughness of layered structures: Embrittlement due to confinement of plasticity. Engineering Fracture Mechanics, 75, 3743-3754 , (2008) - C. S. Han, A. Hartmaier, H. Gao, Y. G. Huang
Discrete dislocation dynamics simulations of surface induced size effects in plasticity. Materials Science and Engineering, A 415, 225-233, (2006) - N. C. Broedling, A. Hartmaier, H. Gao
A combined dislocation - cohesive zone model for fracture in a confined ductile layer. International Journal of Fracture, 140, 169-181, (2006) - A. Hartmaier, M. J. Buehler, H. J. Gao
Two-dimensional discrete dislocation models of deformation in polycrystalline thin metal films on substrates. Materials Science and Engineering A, 400-401, 260-263 , (2005) - A. Hartmaier, P. Gumbsch
Thermal activation of crack-tip plasticity: The brittle or ductile response of a stationary crack loaded to failure. Physical Review B, 71, 024108 , (2005) - A. Hartmaier, M. J. Buehler, H. J. Gao
Multiscale modeling of deformation in polycrystalline thin metal films on substrates. Advanced Engineering Materials, 7, 165-169 , (2005) - M. J. Buehler, A. Hartmaier, M. Duchaineau, F. F. Abraham, H. Gao
The dynamical complexity of work-hardening: a large-scale molecular dynamics simulation. Acta Mechanica Sinica, 21, 103-111, (2005) - M. J. Buehler, A. Hartmaier, H. Gao
Hierarchical multi-scale modelling of plasticity of submicron thin metal films. Modelling and Simulation in Materials Science and Engineering, 12 , S391-S413 , (2004) - A. Hartmaier, P. Gumbsch
Discrete dislocations dynamics simulation of crack-tip plasticity. Continuum Scale Simulation of Engineering Materials: Fundamentals - Microstructures - Process Applications, 413-428, (2004) - M. J. Buehler, A. Hartmaier, H. Gao
Constrained grain boundary diffusion in thin copper films. Nanoscale Materials and Modeling-Relations Among Processing, Microstructure and Mechanical Properties, 821, 8.2.1 - 8.2.6, (2004) - A. Hartmaier, X. Ma, H. Gao
Grain-structure evolution after surface plastic deformation of nanocrystals. Proceedings of the 25th Ris\o{} International Symposium on Materials Science: Evolution of Deformation Microstructures in 3D , 323-328, (2004) - M. J. Buehler, A. Hartmaier, H. Gao
Hierarchical multi-scale modelling of plasticity of submicron thin metal films. Modelling Simul. Mater. Sci. Eng., 12, 391-413, (2004) - M .J. Buehler, A. Hartmaier, M. Duchaineau, F. F. Abraham, H. Gao
Analysis of a one-billion atom simulation of work-hardening in ductile materials. Nanoscale Materials and Modeling - Relations Among Processing, Microstructure and Mechanical Properties, 821, 1.2.1-1.2.12, (2004) - M. J. Buehler, A. Hartmaier, H. Gao
Atomic plasticity: description and analysis of a one-billion atom simulation of ductile materials failure. Computer Methods in Applied Mechanics and Engineering, 193 , 5257-5282 , (2004) - M.J. Buehler, A. Hartmaier, H. Gao
Atomistic and continuum studies of crack-like diffusion wedges and associated dislocation mechanisms in thin films on substrates. Journal of the Mechanics and Physics of Solids, 51 , 2105-2125 , (2003) - A. Hartmaier, P. Gumbsch
Models for fracture toughness in the semi-brittle regime. Recent Developments in the Modelling of Rupture in Solids, 63-68, (2003) - R. Laternser, H. P. Gänser, L. Taenzer, A. Hartmaier
Chip formation in cellular materials. Journal of Engineering Materials and Technology, 125, 44-49, (2003) - M. J. Buehler, A. Hartmaier, H. Gao, X. Ma
A discrete dislocation plasticity model of creep in polycrystalline thin films. Defect and Diffusion Forum, 224-225, 107-128, (2003) - M. J. Buehler, A. Hartmaier, H. Gao
Continuum and atomistic studies of crack-like diffusion wedges. Multiscale Phenomena in Materials: Experiments and Modeling Related to Mechanical Behavior, 779, W4.7.1, (2003) - A. Hartmaier, P. Gumbsch
Scaling relations for crack-tip plasticity. Philosophical Magazine, A 82, 3187-3200, (2000) - A. Hartmaier, P. Gumbsch
The brittle-to-ductile transition and dislocation activity at crack tips. Journal of Computer-Aided Materials Design, 6, 145-155, (1999) - A. Hartmaier, P. Gumbsch, E. Arzt, W. D. Nix
Modeling work hardening in thin metal films on substrates. Metalle/Simulation Metalle, VI, 541-546, (1999) - A. Hartmaier, M.C. Fivel, G. R. Canova, P. Gumbsch
Image stresses in a free-standing thin film. Modelling Simul. Mater. Sci. Eng., 7, 781-793, (1999) - A. Hartmaier, P. Gumbsch
Mesoscopic simulation of dislocation activity at crack tips. Fracture and Ductile vs. Brittle Behavior - Theory, Modeling, and Experiment, 539, 233-244, (1999) - P. Gumbsch, J. Riedle, A. Hartmaier, H.F. Fischermeister
Controlling factors for the brittle-to-ductile transition in tungsten single crystals. Science, 282, 1293-1295, (1998) - A. Hartmaier, M. C. Fivel, G. R. Canova, P. Gumbsch
3D discrete dislocation models of thin-film plasticity.. Thin Films - Stresses and Mechanical Properties, 505, 539-544, (1998) - A. Hartmaier, P. Gumbsch
On the activation energy for the brittle/ductile transition. Phys. Status Solidi B, 202, R1-R2 , (1997) - A. Hartmaier, H. M. Urbassek, W. Sack
Transition flow in an impact pressure probe: Relevance of gas–wall interaction. Physics of Fluids, A9, 1344-1352, (1997)
- 25.09.2024
Ronak Shoghi, Alexander Hartmaier
A microstructure-sensitive machine learning model for plasticity and strain hardening in polycrystalline metals
MSE 2024 Materials Science and Engineering Congress and Exhibition, TU Darmstadt, Germany - 15.05.2024
Alexander Hartmaier, Ronak Shoghi
Machine learning models for microstructure-property relationships invited
Tailor-made multiscale materials systems, 3rd International Workshop, Hamburg, Germany - 01.12.2023
Ronak Shoghi, Alexander Hartmaier
A machine learning-based constitutive modeling of plastic behavior in polycrystalline materials using crystal plasticity simulations including strain hardening
MRS Fall Meeting & Exhibition Boston, USA - 05.07.2023
Ronak Shoghi, Alexander Hartmaier
Developing a microstructure-sensitive machine learning yield function and strain hardening model
SEECCM Conference 5th South-East European Conference on Computational Mechanics, Vrnjačka Banja, Serbia - 23.05.2023
Jan Schmidt, Alexander Hartmaier
Data-oriented description of microstructure-dependent plastic material behavior
7th World Congress on Integrated Computational Materials Engineering (ICME 2023) Orlando, USA - 20.03.2023
Ronak Shoghi, Jan Schmidt, Alexander Hartmaier
Data-oriented constitutive models for polycrystalline metals
GAMM AG Data - 07.01.2023
Alexander Hartmaier, Ronak Shoghi, Jan Schmidt, Abhishek Biswas
Data-oriented constitutive modeling for plasticity and damage
International Conference on Plasticity, Damage, and Fracture 2023 Barcelo Bavaro Punta Cana, Dominican Republic - 05.10.2022
Jan Schmidt, Abhishek Biswas, Napat Vajragupta, Alexander Hartmaier
Data-oriented description of texture-dependent anisotropic plastic material behavior
MMM10, Baltimore, USA - 29.09.2022
Ronak Shoghi, Alexander Hartmaier
Optimal data-generation strategy for machine learning yield functions in anisotropic plasticity
Materials Science and Engineering MSE, Darmstadt, Germany - 29.09.2022
Golsa Tolooei Eshlaghi, Gero Egels, Sebastian Weber, Alexander Hartmaier
Data-based characterization of metastable austenitic steels
Materials Science and Engineering (MSE) Congress 2022, Darmstadt, Germany - 28.09.2022
Mahdieh Shahmardani Firouzjah, Napat Vajragupta, Tomáš Babinský, S. Guth, et al.
Micromechanical modeling of the fatigue behavior of austenitic steel from additive manufacturing
MSE 2022 Materials Science and Engineering Conference, Darmstadt,Germany - 04.07.2022
Rebecca Janisch, Abril Azócar Guzmán, Alexander Hartmaier
Hydrogen enhanced decohesion in ferritic steels - a reassessment of the first-principles cohesive zone model invited
European Solid Mechanics Conference 2022 (ESMC 2022), Galway, Ireland - 24.03.2022
Rebecca Janisch, Abril Azócar Guzmán, Aparna Subramanyam, Smobin Vincent, et al.
Trapping of hydrogen at grain boundaries in ferritic steels – the role of grain boundary structure and composition invited
International Seminar Series on the Microstructure of Materials, online event - 15.06.2021
Mahdieh Shahmardani Firouzjah, Alexander Hartmaier
Low cycle fatigue modeling of a single crystal nickel-based superalloy at different temperature ranges
15th International Conference on Creep and Fracture of Engineering Materials and Structures, online event - 22.09.2020
Mahesh Ramaswamy Guru Prasad, Abhishek Biswas, Napat Vajragupta, Alexander Hartmaier
Influence of porosity on plasticity and damage of SLM manufactured metal assessed by a micromechanical modeling scheme
Materials Science and Engineering Congress 2020 online conference TU Darmstadt, Germany, online conference - 24.09.2020
Abril Azócar Guzmán, Jeongwook Jeon, Alexander Hartmaier, Rebecca Janisch
Ab initio analysis of hydrogen solution, segregation and embrittlement at cleavage plains and at a grain boundary in ferritic steel
Materials Science and Engineering Congress 2020 online conference, TU Darmstadt, Germany - 22.09.2020
Anupam Neogi, Alexander Hartmaier, Rebecca Janisch
Orientation-dependent fracture behaviour of single crystal and two-phase intermetallic TiAl
Materials Science and Engineering Congress 2020 online conference, TU Darmstadt, Germany - 27.05.2020
Hafiz Muhammad Sajjad, Hamad Hassan, Matthias Kuntz, Benjamin Schaefer, et al.
An inverse method to determine fatigue properties of materials using cyclic Vickers indentation and numerical simulation
4th International Symposium on Fatigue Design and Material Defects https://fdmd2020.inventum.de/scientific-programme/ - 11.12.2019
Napat Vajragupta, Abhishek Biswas, Mahesh Ramaswamy Guru Prasad, Alexander Hartmaier
Mechanical property prediction of additively manufactured metals by micromechanical modelling
Materials Science and Technology of Additive Manufacturing (MSTAM) Bremen, Germany - 02.12.2019
Waseem Amin, Muhammad Ali, Alexander Hartmaier, Ingo Steinbach
Creep and strengthening through interfaces explained by dislocation-based strain-gradient crystal plasticity-phase field method
MRD's 2nd Young Materials Researchers Day, Ruhr-Universität Bochum, Germany - 21.11.2019
Alexander Hartmaier
Atomistically informed continuum models for deformation and failure of materials invited
IC-MPPE 2019 Integrated Computation Materials, Process and Product Engineering, Leoben, Austria - 13.11.2019
Abhishek Biswas, Napat Vajragupta, Ralf Hielscher, Alexander Hartmaier
Optimal reconstruction of crystallographic texture with a reduced set of orientations
Arbeitskreise Mikrostrukturmechanik im FA Materials Modelling, Simulation and Data Siegen, Germany - 13.11.2019
Mahesh Ramaswamy Guru Prasad, Abhishek Biswas, Napat Vajragupta, Alexander Hartmaier
Kanapy: A tool for generating complex synthetic polycrystalline microstructures
Arbeitskreise Mikrostrukturmechanik im FA Materials Modelling, Simulation and Data Siegen, Germany - 01.09.2019
Rebecca Janisch, Johannes Möller, Erik Bitzek, Hamad Hassan, Alexander Hartmaier
Segregation and embrittlement at grain boundaries in multicomponent steel – insights from ab-initio calculations invited
EUROMAT 2019 Stockholm, Sweden - 22.08.2019
Rebecca Janisch, Johannes Möller, Erik Bitzek, Hamad Hassan, Alexander Hartmaier
Atomistic aspects of deformation and fracture invited
DCMS MATERIALS 4.0 summer school Deep Mechanics Dresden, Germany - 05.08.2019
Anupam Neogi, Alexander Hartmaier, Rebecca Janisch
Atomistic simulation of fracture in lamellar TiAl microstructures
ISAM4-2019: The fourth International Symposium on Atomistic and Multiscale Modeling of Mechanics and Multiphysics (IIS UTokyo SYMPOSIUM No. 101), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Germany - 06.08.2019
Anupam Neogi, Rebecca Janisch, Alexander Hartmaier
Atomistic simulation of fracture in lamellar TiAl microstructures
ISAM4-2019: The fourth International Symposium on Atomistic and Multiscale Modeling of Mechanics and Multiphysics, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Germany - 12.06.2019
Rebecca Janisch, Johannes Möller, Erik Bitzek, Hamad Hassan, Alexander Hartmaier
Fracture ab initio: a force-based scaling law for atomistically informed continuum models
Canadian Materials Science Conference Vancouver, Canada - 21.05.2019
Napat Vajragupta, Abhishek Biswas, Mahesh Ramaswamy Guru Prasad, Alexander Hartmaier
Data-driven toolkit for property-based design of microstructures
Ruhr-Universität Bochum ICAMS Advanced Discussions - 02.04.2019
Abril Azócar Guzmán, Rebecca Janisch, Alexander Hartmaier
Size independent description of the strain effects on the segregation of carbon and hydrogen in iron
DPG Spring Meeting, Regensburg, Germany - 02.04.2019
Rebecca Janisch, Xiang Huang, Alexander Hartmaier
Partitioning of segregating impurities during grain boundary decohesion
DPG Spring Meeting, Regensburg, Germany - 19.02.2019
Jenni Engels, Napat Vajragupta, Alexander Hartmaier
Inverse analysis on tempered lath martensite: a materials science and methodological study
Nanobrücken 2019 Berlin, Germany - 14.11.2018
Hamad Hassan, Zhanfeng Wang, Zongwei Xu, Jianguo Zhang, et al.
Application of crystal plasticity finite element method to the modeling of orthogonal cutting process
2nd Materials Chain International Conference 2018, Bochum, Germany - 12.11.2018
Waseem Amin, Napat Vajragupta, Alexander Hartmaier
Micromechanical modeling of metals using crystal plasticity-phase field method
The second Materials Chain International Conference, MCIC 2018 Session: Modelling and Simulation Ruhr-Universität Bochum 12-14 Nov. 2018 - 01.11.2018
Hamad Hassan, Johannes Möller, Erik Bitzek, Alexander Hartmaier, Rebecca Janisch
Atomistically informed mesoscale modeling of fracture
18th International conference on the strength of materials (ICSMA) Osaka, Japan - 27.09.2018
Abhishek Biswas, Mahesh Ramaswamy Guru Prasad, Hamad Hassan, Florian Brenne, et al.
Micro-mechanical modelling of additively manufactured 316L stainless steel
Materials Science and Engineering (MSE) Darmstadt, Germany - 27.09.2018
Rebecca Janisch, Ashish Chauniyal, Ankit Izardar, Alexander Hartmaier
Atomistic simulations of size effects in lamellar TiAl alloys
Materials Science and Engineering (MSE) Darmstadt, Germany - 27.09.2018
Denise Reimann, Hamad Hassan, Tobias Glasmachers, Alexander Hartmaier
Using machine learning methods to homogenise damage from micro- to macroscale
Materials Science and Engineering (MSE) Darmstadt, Germany - 27.09.2018
Jenni Engels, Napat Vajragupta, Alexander Hartmaier
Parameterization of a nonlocal crystal plasticity model for lath martensite using nanoindentation
Materials Science and Engineering (MSE) Darmstadt, Germany - 27.09.2018
Napat Vajragupta, Sascha Maassen, Dominik Brands, Till Clausmeyer, et al.
Micromechanical modeling of DP600 steel: From microstructure to the sheet metal forming process
Materials Science and Engineering (MSE) Darmstadt, Germany - 18.09.2018
Abhishek Biswas, Mahesh Ramaswamy Guru Prasad, Napat Vajragupta, Hamad Hassan, et al.
Texture evolution during uniaxial tensile test of additively manufactured 316L stainless steel
6th International Symposium on Computational Mechanics of Polycrystals, Düsseldorf, Germany - 17.09.2018
Mahesh Ramaswamy Guru Prasad, Napat Vajragupta, Alexander Hartmaier
Synthetic microstructure generation for additively manufactured superalloys
6th International Symposium on Computational Mechanics of Polychrystals, Düsseldorf, Germany - 13.09.2018
Alexander Hartmaier
What does nanoindentation teach us on macroscopic material behavior invited
Indentation 2018 14-18 September 2018 Liège, Belgium, - 27.08.2018
Hafiz Muhammad Sajjad, Hamad Hassan, Alexander Hartmaier
Numerical modeling of cyclic nano-indentation using Chaboche material model
Sino-German Symposium and Summer School, Bochum, Germany - 23.07.2018
Siwen Gao, Umaaran Gogilan, Anxin Ma, Alexander Hartmaier
Numerically efficient microstructure-based calculation of internal stresses in superalloys
13th World Congress on Computational Mechanics, New York City, USA - 18.07.2018
Napat Vajragupta, Srinivas Kamath, Till Clausmeyer, Alexander Hartmaier
A micromechanical modeling scheme to parameterize a loading-path- dependent hardening model for DC06 steel
18th International Conference on the Strength of Materials, Ohio, USA - 17.07.2018
Hamad Hassan, Kishan Govind, Alexander Hartmaier
Numerical modeling of the influence of process conditions on hydrogen transport at microstructural level
18th International Conference on the Strength of Materials, Ohio, USA - 17.07.2018
Siwen Gao, Philip Wollgramm, Gunther Eggeler, Anxin Ma, et al.
A phenomenological creep model for nickel-base single crystal superalloys at intermediate temperatures
18th International Conference on the Strength of Materials, Ohio, USA - 16.07.2018
Hamad Hassan, Martin Boeff, Alexander Hartmaier
Micromechanical modeling of fatigue crack incubation and small crack growth in polycrystals
18th International Conference on the Strength of Materials, Ohio, USA - 25.06.2018
Siwen Gao, Philip Wollgramm, Gunther Eggeler, Anxin Ma, et al.
A phenomenological creep model for nickel-base single crystal superalloys at intermediate temperatures
10 Years ICAMS Ruhr-Universität Bochum, Germany - 25.06.2018
Waseem Amin, Napat Vajragupta, Alexander Hartmaier
Prediction of large deformations in FCC Metals using crystal platicity phase-field method
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 25.06.2018
Abhishek Biswas, Mahesh Ramaswamy Guru Prasad, Napat Vajragupta, Hamad Hassan, et al.
Micromechanical modeling of additively manufactured 316L stainless steel
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 25.06.2018
Jenni Engels, Napat Vajragupta, Alexander Hartmaier
Characterization of tempered lath martensite using nanoindentation and inverse method
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 25.06.2018
Denise Reimann, Hamad Hassan, Alexander Hartmaier
Using machine learning methods to homogenise damage from micro- to macroscale
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 25.06.2018
Hafiz Muhammad Sajjad, Hamad Hassan, Alexander Hartmaier
Micromechanical modelling of fatigue simulations using crystal plasticity and finite element method
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 25.06.2018
Muhammad Ibrar Saleh, Hamad Hassan, Alexander Hartmaier
Micromechanical modelling of hydrogen diffusion in two phase steel
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 25.06.2018
Hafiz Muhammad Sajjad, Hamad Hassan, Alexander Hartmaier
Numerical modeling of cyclic nano-indentation using Chaboche material model
10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany - 03.05.2018
Alexander Hartmaier
Micromechanical modeling of plasticity and damage in realistic microstructures
4th Workshop GAMM AG, Data Leuphana Universität, Lüneburg, Germany - 14.03.2018
Johannes Möller, Hamad Hassan, Erik Bitzek, Alexander Hartmaier, Rebecca Janisch
From inter-atomic forces to stress fields at a crack tip - incorporating the results of atomistic calculations into continuum models
DPG Spring Meeting, Berlin, Germany - 29.08.2018
Hamad Hassan, Zhanfeng Wang, Zongwei Xu, Jianguo Zhang, et al.
On the application of crystal plasticity finite element method approach to the modeling of wear mechanisms
Sino-German Symposium and Summer School, Bochum, Germany - 11.12.2017
Jenni Engels, Napat Vajragupta, Alexander Hartmaier
Adressing an indentation size effect (ISE) in the nanoindentation test using a nonlocal crystal plasticity model
RUB Materials Day, Ruhr-Universität Bochum, Germany - 20.09.2017
Jenni Engels, Waseem Amin, Abhishek Biswas, Siwen Gao, et al.
Parameterization of a nonlocal crystal plasticity model by nanoindentation and inverse modeling
27th International Workshop on Computional Mechanics of Materials (IWCMM27), Leuven, Belgium - 19.09.2017
Hamad Hassan, Wenye Ye, Alexander Hartmaier
Micromechanical modeling of fatigue crack initiation in aluminium 2024 invited
EUROMAT 2017, Thessaloniki, Greece - 18.09.2017
Napat Vajragupta, Hamad Hassan, Alexander Hartmaier
Towards prediction of springback in deep drawing using a micromechanical modelling scheme
The 12th International Conference on Technology of Plasticity (ICTP2017), Cambridge, UK - 06.09.2017
Napat Vajragupta, Nishant Pillai, Jenni Engels, Alexander Hartmaier
Parameterization of a nonlocal crystal plasticity model for tempered martensite by nanoindentation and inverse modelling
XIV International Conference on Computational Plasticity. Fundamental and Applications (COMPLAS 2017), Barcelona, Spain - 05.09.2017
Hamad Hassan, Martin Boeff, Alexander Hartmaier
Study of the influence of cyclic loading on the surface deformation using micromechanical modeling scheme
Sino-German Symposium: Modeling and Experiment of Material-oriented Micro/Nano Manufacturing, Harbin, China - 05.09.2017
Hamad Hassan, Martin Boeff, Alexander Hartmaier
Modelling and experiment of material-oriented micro/nano manufacturing invited
Sino-German Symposium: Modeling and Experiment of Material-oriented Micro/Nano Manufacturing, Harbin, China - 30.08.2017
Alexander Hartmaier
Atomistically informed continuum models for deformation and fracture of materials invited
International Symposium on Multiscale Computational Analysis of Complex Materials, Copenhagen, Denmark - 21.07.2017
Hamad Hassan, Alexander Hartmaier
Micromechanical modeling of fatigue using crystal plasticity finite element method
Haël Mughrabi Honorary Symposium & 28th Colloquium on Fatigue Mechanisms, Erlangen, Germany - 20.06.2017
Rebecca Janisch, Mansour Kanani, Xueyong Pang, Arshad Tahir, Alexander Hartmaier
Deformation and fracture at grain boundaries: Can we include atomistic effects in mesoscale descriptions via a few physical parameters? invited
14th International Conference on Fracture, Ixia, Greece - 22.05.2017
Rebecca Janisch, Mansour Kanani, Xueyong Pang, Alexander Hartmaier
Atomistic origins of deformation at grain boundaries in Al and TiAl invited
EMRS Spring Meeting 2017, Strasbourg, France - 09.05.2017
Napat Vajragupta, Hamad Hassan, Alexander Hartmaier
Towards prediction of springback in deep drawing using a micromechanical modelling scheme
ICAMS Advanced Discussions, Bochum, Germany - 09.05.2017
Hafiz Muhammad Sajjad, Hamad Hassan, Muhammad Ibrar Saleh, Denise Reimann, Alexander Hartmaier
Discrete micromehanics and fracture
ICAMS Advanced Discussions, Bochum, Germany - 03.05.2017
Rebecca Janisch, Xueyong Pang, Mansour Kanani, Ankit Izardar, Alexander Hartmaier
Grain boundary properties: Insights from atomistic simulations and their use in mechanical modeling of materials invited
SFB 986 Materials Science Colloquium, Technical University Hamburg, Germany - 22.03.2017
Rebecca Janisch, Mansour Kanani, Alexander Hartmaier
The shear instability energy as a new parameter to characterise deformation behaviour of materials
DPG Spring Meeting, Dresden, Germany - 20.03.2017
Aparna Subramanyam, Abril Azócar Guzmán, Rebecca Janisch, Alexander Hartmaier
Effects of alloying additions on the H embrittlement of a C segregated Σ5 GB in α Fe
DPG Spring Meeting, Dresden, Germany - 01.12.2016
Alexander Hartmaier
Virtuelle und reale Härteprüfung: Wie gelingt die Verknüpfung von Experiment und Simulation? invited
Tagung Werkstoffprüfung 2016, Neu-Ulm, Germany - 20.10.2016
Alexander Hartmaier
Atomistically informed continuum models for deformation and fracture of materials invited
MICOS 2016: International Conference on Microscale Morphology of Component Surfaces, TU Kaiserslautern, Germany - 03.10.2016
Aparna Subramanyam, Rebecca Janisch, Alexander Hartmaier
Effects of manganese on the hydrogen embrittlement of a Carbon segregated grain boundary in α-Fe
ADIS 2016, Tegernsee, Germany - 29.09.2016
Alexander Hartmaier, Philipp Schwittek
Micromechanical modeling of hydrogen embrittlement in martensitic steel
MSE 2016: Materials Science and Engineering Congress, Darmstadt, Germany - 28.09.2016
Rebecca Janisch, Aram Asaadi, Ankit Izardar, Alexander Hartmaier
Molecular dynamics simulations of nano-indentation in lamellar microstructures of TiAl
MSE 2016: Materials Science and Engineering Congress, Darmstadt, Germany - 27.09.2016
Rebecca Janisch, Mansour Kanani, Alexander Hartmaier
Shear mechanisms at interfaces in lamellar TiAl alloys from atomistic simulations
MSE 2016: Materials Science and Engineering Congress, Darmstadt, Germany - 27.09.2016
Alexander Hartmaier, Christoph Begau, Godehard Sutmann
Free energy function of dislocation densities by large scale atomistic simulation
MSE 2016: Materials Science and Engineering Congress, Darmstadt, Germany - 14.09.2016
Alexander Hartmaier, Philipp Schwittek
Micromechanical modeling of hydrogen embrittlement in martensitic steel
International Hydrogen Conference 2016, Grand Teton National Park, USA - 12.09.2016
Zongwei Xu, Fengzhou Fang, Alexander Hartmaier
Ion beam nanofabrication and its applications in bio-sensing & Si/SiC brittle materials’ nanocutting under SEM
Seminar at Centre for Precision Manufacturing at the University of Strathclyde, Glasgow, UK - 09.09.2016
Zongwei Xu, Fengzhou Fang, Alexander Hartmaier
Ion beam nanofabrication and its applications in nano-optics and bio-sensing invited
Special Seminar at Cardiff University, Cardiff, UK - 28.06.2016
Alexander Hartmaier
Atomistically informed continuum models for plasticity and fracture invited
8th International Conference on Materials Structure and Micromechanics of Fracture, Brno, Czech Republic - 22.06.2016
Zongwei Xu, Fengzhou Fang, Yinjing Xiao, Tao Wang, Alexander Hartmaier
Molecular dynamics simulation of focused Ga ion beam induced nanoscale damage on silicon and its annealing recovery mechanism invited
EMN 2016: Energy Materials and Nanotechnology, Prague, Czech Republic - 08.06.2016
Zongwei Xu, Fengzhou Fang, Alexander Hartmaier
Diamond cutting tool’s nanofabrication with focused ion beam
1st International Conference on Helium Ion Microscopy and Emerging Focused Ion Beam Technologies, Luxembourg - 31.05.2016
Rebecca Janisch, Xueyong Pang, Mansour Kanani, Alexander Hartmaier
Constitutive relationships for grain boundaries from atomistic simulations for multiscale mechanical modelling of metallic microstructures
Materials Chain International Conference 2016, Bochum, Germany - 31.05.2016
Alexander Hartmaier
Advances in scalebridging modeling of deformation and fracture in martensitic steels
Materials Chain International Conference 2016, Bochum, Germany - 12.05.2016
Alexander Hartmaier
What does nanoscale testing and modeling teach us on macroscopic material behavior? invited
Colloquium of the Department of Materials, University of Oxford, UK - 02.05.2016
Rebecca Janisch, Mansour Kanani, Xueyong Pang, Alexander Hartmaier
Constitutive relationships for grain boundaries from atomistic simulations invited
ICAMS Advanced Discussions 2016, Bochum, Germany - 02.03.2016
Alexander Hartmaier
Atomistically informed crystal plasticity models invited
Schöntal Symposium Dislocation-based Plasticity, Schöntal, Germany - 19.02.2016
Alexander Hartmaier
Advances in scalebridging modeling of deformation and fracture in martensitic steels invited
Colloquium at NTNU Trondheim, Norway, February 19, 2016. - 19.11.2015
Hariprasath Ganesan, Christoph Begau, Godehard Sutmann, Alexander Hartmaier
Atomistic modeling of carbon segregation and its influence on dislocation mobility in ferritic iron
RUB Research Day 2015, Bochum, Germany - 30.10.2015
Alexander Hartmaier
Atomistically informed continuum models for plasticity, damage and fracture of martensitic steels invited
International Symposium on Microstructure and Mechanical Properties of Advanced Metallic Materials, Erlangen, Germany - 06.10.2015
Alexander Hartmaier
Micromechanical modeling (I. heterogeneous materials, II. microstructure evolution) invited
French-German Summer School on Evolutionary Solid Bodies, Bollendorf, Germany - 05.10.2015
Christoph Begau, Godehard Sutmann, Alexander Hartmaier
Free energy function of dislocation densities by large scale atomistic simulations
Nanomechanical Testing in Materials Research and Development V, Albufeira, Portugal - 02.10.2015
Xueyong Pang, Arshad Tahir, Rebecca Janisch, Alexander Hartmaier
Interplanar potential for tension-shear coupling at grain boundaries from ab initio calculations
25th International Workshop on Computational Micromechanics, Bochum, Germany - 22.09.2015
Hariprasath Ganesan, Christoph Begau, Godehard Sutmann, Alexander Hartmaier
Atomistic modeling of carbon segregation and its influence on dislocation mobility in ferritic iron
Euromat 2015, Warsaw, Poland - 27.07.2015
Anxin Ma, Alexander Hartmaier
Microstructure informed constitutive models and their applications invited
Ohio State University, Columbus, USA - 28.05.2015
Matthias Kulosa, Matthias Neumann, Martin Boeff, Gerd Gaiselmann, et al.
Characterization of porous ceramics derived from a combination of stochastic and mechanical modeling
4th International Conference on Material Modeling, Berkeley, USA - 12.05.2015
Siwen Gao, Marc Fivel, Alexander Hartmaier
Influence of misfit stresses on dislocation glide in single crystal superalloys: A three-dimensional discrete dislocation dynamics study
12th International Conference on the Mechanical Behavior of Materials, Karlsruhe, Germany - 12.05.2015
Anxin Ma, Siwen Gao, Inmaculada Lopez-Galilea, Stephan Huth, et al.
Crystal plasticity modeling of porosity reduction in an as-cast Ni-base single crystal superalloy during hot isostatic pressing
12th International Conference on the Mechanical Behavior of Materials, Karlsruhe, Germany - 25.03.2015
Anxin Ma, Inmaculada Lopez-Galilea, Werner Theisen, Alexander Hartmaier
CPFEM modeling of porosity reduction in an as-cast Ni-base single crystal superalloy under HIP
Gordon Research Conference Physical Metallurgy 2015, Maine, USA - 19.03.2015
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Shearing behaviour of interfaces: Linking intrinsic properties with deformation mechanisms
DPG Spring Meeting 2015, Berlin, Germany - 16.03.2015
Arshad Tahir, Rebecca Janisch, Alexander Hartmaier
Hydrogen embrittlement of a carbon segregated symmetrical tilt grain boundary in α-Fe
DPG Spring Meeting 2015, Berlin, Germany - 05.01.2015
Anxin Ma, Alexander Hartmaier
The higher order nonlocal constitutive model and its application to multiphase materials invited
International Symposium of Plasticity 2015, Montego Bay, Jamaica - 02.01.2015
Alexander Hartmaier, Karthikeyan Chockalingam, Rehman Hameed, Philipp Schwittek, et al.
Atomistically informed continuum models for plasticity and fracture of tempered martensite invited
International Symposium of Plasticity 2015, Montego Bay, Jamaica - 11.12.2014
Siwen Gao, Mohan Rajendran, Marc Fivel, Anxin Ma, et al.
3D discrete dislocation dynamics study of plastic deformation in various Ni-base single crystal superalloy microstructures obtained by phase-field method
International Workshop on Dislocation Dynamics Simulations: Trends and Challenges Saclay, France - 03.10.2014
Mohamed Sharaf, Sebastian Münstermann, Pawel Kucharczyk, Alexander Hartmaier, Wolfgang Bleck
The optimum microstructure fatigue resistance: a micromechanical solution to an inferential statistics problem
XXIV International Workshop on Computational Micromechanics of Materials, Madrid, Spain - 01.10.2014
Alexander Hartmaier, Karthikeyan Chockalingam, Rehman Hameed, Xueyong Pang, et al.
Atomistically informed continuum models for plasticity and fracture of martensitic steels invited
24th International Workshop on Computational Mechanics of Materials, Madrid, Spain - 24.09.2014
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Atomistic study of deformation mechanisms in TiAl-Ti3Al lamellar microstructure
Materials Science and Engineering MSE, Darmstadt, Germany - 24.09.2014
Mohamed Sharaf, Sebastian Münstermann, Napat Vajragupta, Pawel Kucharczyk, et al.
Structural steel endurance: towards the optimum microstructure fatigue resistance
Materials Science and Engineering MSE 2014, Darmstadt, Germany - 28.08.2014
Philipp Engels, Efim Borukhovich, Ingo Steinbach, Alexander Hartmaier
An integrated crystal-plasticity and phase-field simulation framework
EMMC14 - European Mechanics of Materials Conference, Gothenburg, Sweden - 15.07.2014
Alexander Hartmaier
What does nanoscale testing and modeling teach us on macroscopic material behavior? invited
Gordon Research Conference on Thin Films and Small Scale, Boston, USA - 08.07.2014
Alexander Hartmaier, Rehman Hameed, Jenni Engels, Victoria Yardley
Scalebridging simulation of microstructure and mechanical properties of martensitic steel
ICAMS Advanced Discussions 2014, Bochum, Germany - 02.07.2014
Martin Boeff, Anxin Ma, Alexander Hartmaier
Application of crystal plasticity to cyclic loading
European Conference on Fracture, Trondheim, Norway - 11.06.2014
Mohamed Sharaf, Napat Vajragupta, Sebastian Münstermann, Pawel Kucharczyk, et al.
The fatigue limit of steel: a numerical solution to the short cracks problem
The 2nd International Symposium on Fatigue Design & Material Defects, Paris, France - 03.06.2014
Satyapriya Gupta, Anxin Ma, Alexander Hartmaier
Crystal plasticity phase transformation model for metastable austenitic stainless steel
3rd international workshop on physics-based models and experimental verification, Cesme, Turkey - 27.03.2014
Mohamed Sharaf, Pawel Kucharczyk, Napat Vajragupta, Sebastian Münstermann, et al.
Steel endurance: from microstructure to fatigue properties
29th Aachen Stahlkolloquium, Aachen, Germany - 17.03.2014
Philipp Engels, Efim Borukhovich, Oleg Shchyglo, Anxin Ma, et al.
Coupling crystal plasticity and phase-field methods
Winter School International Seminar on Process Chain Simulation and Related Topics, Institute of Technology, Karlsruhe, Germany - 17.03.2014
Satyapriya Gupta, Anxin Ma, Alexander Hartmaier
Crystal plasticity phase transformation model for metastable austenitic stainless steel
Winter School International Seminar on Process Chain Simulation and Related Topics, Institute of Technology, Karlsruhe, Germany - 17.03.2014
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Mechanical properties of interfaces in TiAl α2/γ lamellar microstructures: atomistic study
Winter School International Seminar on Process Chain Simulation and Related Topics, Institute of Technology, Karlsruhe, Germany - 17.03.2014
Martin Boeff, Alexander Hartmaier
Application of J2- and crystal plasticity to cyclic loading conditions: accumulation of plastic strains
Winter School International Seminar on Process Chain Simulation and Related Topics, Institute of Technology, Karlsruhe, Germany - 25.02.2014
Rehman Hameed, Martin Boeff, Anxin Ma, Victoria Yardley, Alexander Hartmaier
Micromechanical modelling of tempered martensite
Schöntal symposium on dislocation based plasticity, Schöntal, Germany - 19.02.2014
Rebecca Janisch, Xueyong Pang, Arshad Tahir, Alexander Hartmaier
Modelling and understanding the strength of grain boundaries based on ab initio results
TMS Annual Meeting and Exhibition, San Diego, USA - 17.02.2014
Tao Wang, Georg Madsen, Alexander Hartmaier
Reduction effect on thermal conductivity of silicon by defect structures investigated from atomistic level
TMS Annual Meeting and Exhibition, San Diego USA - 05.12.2013
Tao Wang, Christoph Begau, Godehard Sutmann, Alexander Hartmaier
Large-scale molecular dynamics simulating of growth, microstructure and properties of plasma-spray coatings
Institute of Energy and Climate Research (IEK-1), Forschungszentrum Jülich, Jülich, Germany - 03.12.2013
Rehman Hameed, Aenne Köster, Anxin Ma, Alexander Hartmaier
Micromechanical modelling of multiphase steels invited
THERMEC 2013, Las Vegas, USA - 12.11.2013
Philipp Schwittek, Tim Heitbreder, Alexander Hartmaier
Coupled diffusion-displacement modelling of crack propagation on double cantilever beam specimens
ICAMS Advanced Discussions, Bochum, Germany - 12.11.2013
Tao Wang, Christoph Begau, Godehard Sutmann, Alexander Hartmaier
Large-scale molecular dynamics simulation of growth, microstructure and properties of plasma-spray coatings
ICAMS Advanced Discussions, Bochum, Germany - 11.11.2013
Mohan Rajendran, Siwen Gao, Anxin Ma, Alexander Hartmaier, et al.
Superalloys: microstructure evolution modelling and creep deformation
ICAMS Advanced Discussions, Bochum, Germany - 06.11.2013
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Interface properties and deformation mechanism of TiAl α2/γ lamellar microstructures from atomistic simulations
Materials Day 2013, Ruhr-Universität Bochum, Bochum, Germany - 14.10.2013
Alexander Hartmaier
Atomistically informed crystal plasticity model for bcc iron invited
Workshop "Plasticity and Crack Initiation in Steels", Leoben, Austria - 12.10.2013
Rakulan Sivanesapillai, Holger Steeb, Alexander Hartmaier
Effective hydraulic properties of sphere packings by microscopic SPH analysis
ALERT Geomaterials Poster Session 2013, Aussois, France - 09.10.2013
Dhiraj Mahajan, Fathollah Varnik, Alexander Hartmaier
Effect of substrate topography on adhesion properties of polymer coatings invited
Sitzung DGM-Fachausschuss „Hybride Werkstoffe und Strukturen“, Kaiserslautern, Germany - 04.10.2013
Mohamed Sharaf, Pawel Kucharczyk, Napat Vajragupta, Sebastian Münstermann, et al.
Numerical simulation of cyclic microcrack growth capability using a crystal plasticity based material model and its experimental validation invited
23rd International Workshop on Computational Mechanics of Materials (IWCMM), Singapore - 01.10.2013
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Interface properties and grain boundary mechanics in a TiAl γ/α2 lamellar microstructure through atomistic simulations
DGM Intermetallics 2013, Bad Staffelstein, Germany - 18.09.2013
Rakulan Sivanesapillai, Holger Steeb, Alexander Hartmaier
Effective hydraulic properties of porous media by pore-scale smoothed particle hydrodynamics analysis
3rd International Conference on Particle-Based Methods: PARTICLES 2013, Stuttgart, Germany - 10.09.2013
Arshad Tahir, Venkata Naga Ganisetti, Rebecca Janisch, Alexander Hartmaier
Effect of impurities on inter-granular fracture strength of body centered cubic metals
EUROMAT 2013, Sevilla, Spain - 10.09.2013
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Mechanical properties and deformation behaviour of TiAl/Ti3Al lamellar microstructures: an atomistic study
EUROMAT 2013, Sevilla, Spain - 10.09.2013
Dhiraj Mahajan, Fathollah Varnik, Alexander Hartmaier
Surface roughness effect on static, dynamic and mechanical properties of polymers at interfaces
3rd International Conference on Material Modelling (ICMM), Warsaw, Poland - 09.09.2013
Satyapriya Gupta, Anxin Ma, Alexander Hartmaier
Crystal plasticity phase transformation model for metastable austenitic stainless steel
EUROMAT 2013, Sevilla, Spain - 26.07.2013
Dhiraj Mahajan, Fathollah Varnik, Alexander Hartmaier
Effect of substrate topography on adhesion properties of polymer coatings
7th International Discussion Meeting on Relaxation in Complex Systems, Barcelona, Spain - 23.07.2013
Siwen Gao, Anxin Ma, Alexander Hartmaier
Study of creep behaviour of cobalt-base superalloy single crystal by 3D discrete dislocation dynamics
International workshop on advanced cobalt-base superalloys, Erlangen, Germany - 09.07.2013
Alexander Hartmaier, Rehman Hameed, Aenne Köster, Anxin Ma
Micromechanical modelling based on 3D microstructures
European Congress on Stereology, Kaiserslautern, Germany - 26.06.2013
Martin Boeff, Anxin Ma, Alexander Hartmaier
Microstructure based fatigue simulations using conventional and crystal plasticity
Mikrostrukturmechanik im DGM-FA Computersimulation, Osnabrück, Germany - 26.06.2013
Alexander Hartmaier, Arshad Tahir, Rebecca Janisch
Atomistically informed continuum models for fracture invited
AK Mikrostrukturmechanik, Hochschule Osnabrück, Osnabrück, Germany - 20.06.2013
Martin Boeff, Anxin Ma, Alexander Hartmaier
Application of crystal plasticity to cyclic loading and comparison to conventional plasticity
13th International Conference of Fracture, Beijing, China - 18.06.2013
Alexander Hartmaier, Arshad Tahir, Rebecca Janisch
Atomistically informed continuum models for fracture
13th International Conference on Fracture, Beijing, China - 17.06.2013
Philipp Schwittek, Alexander Hartmaier
Analysis of hydrogen assisted fracture in martensitic steels
13th International Conference on Fracture, Beijing, China - 05.06.2013
Benjamin Reinholz, Steffen Brinckmann, Alexander Hartmaier, Brittany Muntifering, et al.
Application of disclination dynamic: twin boundary motion in magnetic shape-memory alloys
ICFSMA'13, Boise, USA - 07.05.2013
Alexander Hartmaier
Scalebridging descriptions of mechanical properties of multiphase materials
ICAMS² 2013, International Colloquium on Advanced Materials Simulation, Bochum, Germany - 06.05.2013
Siwen Gao, Anxin Ma, Alexander Hartmaier
Deformation at high temperature (creep in Ni-based superalloys)
ICAMS² 2013, Ruhr-Universität Bochum, Bochum, Germany - 06.05.2013
Dhiraj Mahajan, Anatoly Berezkin, Ulrich Biedermann, Fathollah Varnik, Alexander Hartmaier
Polymer/substrate interfaces: simulation of structure, properties and behaviour
ICAMS² 2013, International Colloquium on Advanced Materials Simulation, Bochum, Germany - 11.04.2013
Alexander Hartmaier
Atomistically informed continuum models for plasticity and failure of metals invited
KU Leuven, Leuven, Belgium - 13.03.2013
Sankari Sampath, Rebecca Janisch, Alexander Hartmaier
Ab-initio prediction of the critical thickness of a coherent precipitate
DPG Spring Meeting 2013, Regensburg, Germany - 13.03.2013
Arshad Tahir, Venkata Naga Ganisetti, Rebecca Janisch, Alexander Hartmaier
Computational study of the intergranular fracture strength of transition metals in the presence of impurity atoms
DPG Spring Meeting 2013, Regensburg, Germany - 13.03.2013
Philipp Engels, Oleg Shchyglo, Anxin Ma, Alexander Hartmaier
On the coupling of crystal-plasticity and the phase-field method
SiMiDe Spring School, Bochum, Germany - 12.03.2013
Tao Wang, Alexander Hartmaier
Reduction of lattice thermal conductivity of silicon by defects investigated by molecular dynamics
SiMiDe Spring School, Bochum, Germany - 11.03.2013
Mansour Kanani, Rebecca Janisch, Alexander Hartmaier
Mechanical properties of fully lamellar TiAl alloys obtained from a DFT study
DPG Spring Meeting 2013, Regensburg, Germany - 14.02.2013
Alexander Hartmaier
High-performance computing in materials science: current applications and challenges invited
Festcolloquium zur JUQUEEN-Einweihung, Foschungszentrum Jülich, Jülich, Germany - 22.01.2013
Alexander Hartmaier, Christoph Begau, Aenne Köster, Anxin Ma
Atomistic and continuum modelling of phase transformations invited
International workshop "Nanostructured titanium based alloys for medical applications", Ein Gedi, Israel - 16.01.2013
Alexander Hartmaier, Christoph Begau, Aenne Köster, Anxin Ma
Mikrostrukturentwicklung bei plastischer Verformung: Atomistische und kontinuumsmechanische Modellierung invited
SFB 926–Kolloquium, Kaiserslautern, Germany - 30.11.2012
Alexander Hartmaier
Atome, Kristalle, Werkstoffe: Skalenüberbrückende Modellierung in der Werkstoffmechanik invited
VDI Materials Day, Osnabrück, Germany - 14.11.2012
Dhiraj Mahajan, Fathollah Varnik, Alexander Hartmaier
Effect of substrate topography on mechanical properties of glassy polymer coatings
ADGLASS Workshop 2012, Bremen, Germany - 08.11.2012
Jenna-Kathrin Heyer, Janine Pfetzing-Micklich, Steffen Brinckmann, Alexander Hartmaier, Gunther Eggeler
In-situ micro shear experiments on fcc-metals in the scanning electron microscope
10th Materials Day, Ruhr-Universität bochum, Bochum, Germany - 08.11.2012
Satyapriya Gupta, Anxin Ma, Alexander Hartmaier
Role of grain and phase boundaries on deformation and internal stresses during deformation of TRIP assisted multiphase steels
Materials Day Ruhr-University Bochum, Bochum, Germany - 08.11.2012
Sankari Sampath, Rebecca Janisch, Suzana Fries, Alexander Hartmaier
The role of coherency strain in the evolution of a metastable precipitate in a molybdenum-carbon binary system
Materials Day 2012, Ruhr-University Bochum, Germany - 19.10.2012
Arshad Tahir, Rebecca Janisch, Alexander Hartmaier
Multiscale modelling of the influence of C on the intergranular-fracture strength of bcc Mo, W and Fe
MMM 2012 - 6th International Conference on Multiscale Materials Modeling, Biopolis, Singapore - 18.10.2012
Dhiraj Mahajan, Fathollah Varnik, Alexander Hartmaier
Effect of surface roughness on cohesive bonding of polymer-solid interfaces
MMM 2012 - 6th International Conference on Multiscale Materials Modeling, Biopolis, Singapore - 18.10.2012
Rebecca Janisch, Naveed Ahmed, Xueyong Pang, Alexander Hartmaier
Efficient ab-initio characterisation of the mechanical behavior of grain boundaries
MMM 2012 - 6th International Conference on Multiscale Materials Modeling, Biopolis, Singapore - 17.10.2012
Rebecca Janisch, Sankari Sampath, Alexander Hartmaier
The role of coherency strain in the evolution of a metastable precipitate in the molybdenum-carbon binary system
MMM 2012, 6th international conference on multiscale materials modeling, Biopolis, Singapore - 07.10.2012
Junhe Lian, Siwen Gao, Mohamed Sharaf, Napat Vajragupta, et al.
Crystal plasticity modelling on single crystal and polycrystal of a ferritic steel sheet
Materials Science & Technology 2012 Pittsburgh, USA - 27.09.2012
Philipp Engels, Anxin Ma, Alexander Hartmaier
Continuum simulation of the dislocation density evolution during nanoindentation
MSE 2012, Darmstadt, Germany - 27.09.2012
Aenne Köster, Anxin Ma, Alexander Hartmaier
Micromechanical based constitutive modelling of transformation induced plasticity
MSE 2012, Darmstadt, Germany - 27.09.2012
Anxin Ma, Alexander Hartmaier
Plastic-strain gradient induced internal stress and geometrically necessary dislocation density in grain-boundary regions
MSE 2012, Darmstadt, Germany - 27.09.2012
Satyapriya Gupta, Anxin Ma, Alexander Hartmaier
Effect of strain gradient in deformation behaviour of multiphase steels
MSE 2012, Darmstadt, Germany - 26.09.2012
Martin Boeff, Steffen Brinckmann, Alexander Hartmaier
Application of crystal plasticity to cyclic loading and comparison to conventional plasticity
MSE 2012, Darmstadt, Germany - 26.09.2012
Tao Wang, Alexander Hartmaier
Atomistic study of the influence of lattice defects on thermal conductivity
MSE 2012, Darmstadt, Germany - 26.09.2012
Nirav Prajapati, Bernhard Eidel, Alexander Hartmaier
Nanoscale simulation in fcc and bcc-crystals using cluster-based quasi continuum method
MSE 2012, Darmstadt, Germany - 26.09.2012
Benjamin Reinholz, Steffen Brinckmann, Alexander Hartmaier
Discrete disclination dynamics: hierarchical twin-boundary motion in magnetic shape-memory alloys
MSE 2012, Darmstadt, Germany - 24.09.2012
Napat Vajragupta, Junhe Lian, Mohamed Sharaf, Benjamin Schmaling, et al.
Generation of statistically-based RVE for dual-phase microstructure using multiplicative weighted Voronoi tessellation and the application to crystal plasticity
International workshop on computational mechanics of materials IWCMM XXII - 10.09.2012
Benjamin Schmaling, Rehman Hameed, Pourya Noury, Philipp Schwittek, Alexander Hartmaier
Assessment of mechanical properties by inverse analysis of (nano-) indentations
2012 International Hydrogen Conference, Jackson Lake Lodge, USA - 27.08.2012
Aenne Köster, Anxin Ma, Alexander Hartmaier
Constitutive model developing for bcc-iron based on atomistic analysis
Dislocations 2012, Budapest, Hungary - 24.08.2012
Sankari Sampath, Rebecca Janisch, Suzana Fries, Alexander Hartmaier
Role of coherency strain in the stabilization of a metastable precipitate of the Mo-C binary system
ICSMA 16, Bangalore, India - 26.09.2012
Philipp Schwittek, Steffen Brinckmann, Alexander Hartmaier
Analysis of diffusion paths and effective diffusion coefficients in multiphase materials
MSE 2012, Darmstadt, Germany - 23.07.2012
Nirav Prajapati, Bernhard Eidel, Alexander Hartmaier
Study of cluster based energy sampling quasi continuum method and its application to nano-indentation
Junior Euromat 2012, Lausanne, Switzerland - 23.07.2012
Jenna-Kathrin Heyer, Janine Pfetzing-Micklich, Steffen Brinckmann, Alexander Hartmaier, Gunther Eggeler
In-situ micro shear experiments on fcc metals in the scanning-electron microscope
Junior-Euromat 2012, Lausanne, Switzerland - 12.07.2012
Anxin Ma, Alexander Hartmaier
Plastic-strain gradient induced internal stress and geometrically necessary dislocation density in grain boundary regions
8th European Solid Mechanics Conference ESMC 2012 Graz, Austria - 06.06.2012
Benjamin Schmaling, Rehman Hameed, Aenne Köster, Anxin Ma, Alexander Hartmaier
A novel method to obtain yield strength and work hardening rate from nanoindentation
1st World Congress on Advanced Materials, Beijing, China - 15.05.2012
Jenna-Kathrin Heyer, Janine Pfetzing-Micklich, Steffen Brinckmann, Alexander Hartmaier, Gunther Eggeler
Micro-shear experiments on fcc metals
Agilent 2012 Nanoindentation Users' Meeting, Fürth, Germany - 29.03.2012
Sankari Sampath, Rebecca Janisch, Suzana Fries, Alexander Hartmaier
Role of coherency strain in the stabilization of a metastable precipitate of the Mo-C binary system
DPG spring meeting, Berlin, Germany - 26.03.2012
Arshad Tahir, Rebecca Janisch, Alexander Hartmaier
C at Σ5 symmetrical tilt grain boundary in Mo - from ab-initio results to traction-separation law
DPG Spring Meeting 2012, Berlin, Germany - 26.03.2012
Xueyong Pang, Rebecca Janisch, Alexander Hartmaier
Ab-initio study of the mechanical shear behavior of Al with and without normal stress
DPG Spring Meeting 2012, Berlin, Germany - 26.03.2012
Alexander Hartmaier, Christoph Begau, Aenne Köster
Modeling phase transformations during mechanical loading invited
GAMM, Darmstadt, Germany - 09.03.2012
Aenne Köster, Anxin Ma, Alexander Hartmaier
Plastische Verformung durch Phasentransformation: konstitutive Beschreibung von TRIP Stählen
DGM AG Mikrostruktur, Siegen, Germany - 06.03.2012
Dhiraj Mahajan, Alexander Hartmaier
Mechanisms of crazing in glassy polymers revealed by molecular dynamics simulations
IAS Winter School – Hierarchical Methods for Dynamics in Complex Molecular Systems, Juelich, Germany - 05.03.2012
Alexander Hartmaier
Large-scale molecular dynamics studies of dislocation dynamics, plasticity and fracture of materials invited
Winter School, Forschungszentrum Jülich, Germany - 15.02.2012
Mohamed Sharaf, Sebastian Münstermann, Steffen Brinckmann, Alexander Hartmaier
Microstructural influence on growth of short cyclic cracks in structural steels
44. Tagung des DVM-Arbeitskreises Bruchvorgänge, Darmstadt, Germany - 26.01.2012
Sankari Sampath, Rebecca Janisch, Suzana Fries, Alexander Hartmaier
The role of coherency strain on the structural stability of a metastable precipitate in Mo-C binary system
1st Austrain German workshop on computational materials design, Kramsach, Austria - 26.01.2012
Arshad Tahir, Rebecca Janisch, Alexander Hartmaier
Influence of C on the mechanical properties of a Σ5 STGB in Mo: ab-initio study
1st Austrian-German workshop on Computational Materials Design, Kramsach, Austria - 06.01.2012
Alexander Hartmaier
Micromechanical modelling of mechanical properties of multiphase materials invited
International Symposium on Plasticity, San Juan, Puerto Rico - 05.01.2012
Jenna-Kathrin Heyer, Janine Pfetzing-Micklich, Steffen Brinckmann, Alexander Hartmaier, Gunther Eggeler
Micro-shear deformation of fcc crystals
International Symposium on Plasticity, San Juan, USA - 18.11.2011
Alexander Hartmaier
Mechanische Eigenschaften mehrphasiger Werkstoffe
DGM-Fortbildung "Modellierung und Simulation", ICAMS, Ruhr-Universität Bochum, Bochum, Germany - 10.10.2011
Christoph Begau, Jun Hua, Alexander Hartmaier
Direct evaluation of dislocation networks and dislocation density tensors from atomistic data
ECI Conference on Nanomechanical Testing 2011, Lanzarote, Spain - 09.10.2011
Janine Pfetzing-Micklich, Steffen Brinckmann, Jan Frenzel, Alexander Hartmaier, Gunther Eggeler
Micro-shear deformation of fcc crystals
ECI Conference on Nanomechanical Testing 2011, Lanzarote, Spain - 30.09.2011
Steffen Brinckmann, Dhiraj Mahajan, Christoph Begau, Alexander Hartmaier
Combined molecular dynamics and dislocation dynamics simulation: a study of dislocation nucleation at crack tips
DGM AG Mikrostruktur, Braunschweig - 12.09.2011
Arshad Tahir, Rebecca Janisch, Alexander Hartmaier
Ab-initio investigation of the influence of carbon on the mechanical properties of the sigma-5 symmetrical tilt grain boundary in molybdenum
EUROMAT 2011 - European Congress on Advanced Materials and Processes, Montpellier, France - 12.09.2011
Dhiraj Mahajan, Steffen Brinckmann, Alexander Hartmaier
Localization during failure of glassy polymers
EUROMAT 2011 - European Congress on Advanced Materials and Processes, Montpellier, France - 12.09.2011
Sankari Sampath, Rebecca Janisch, Suzana Fries, Alexander Hartmaier
The role of interface energy in the evolution of a metastable phase in the molybdenum-carbon binary system
EUROMAT 2011 - European Congress on Advanced Materials and Processes, Montpellier, France - 12.09.2011
Xueyong Pang, Rebecca Janisch, Naveed Ahmed, Alexander Hartmaier
Ab-initio study of the shear properties of aluminium with different methods
EUROMAT 2011 - European Congress on Advanced Materials and Processes, Montpellier, France - 12.09.2011
Steffen Brinckmann, Dhiraj Mahajan, Christoph Begau, Alexander Hartmaier
Combined molecular dynamics and dislocation dynamics simulation: a study of dislocation nucleation at crack tips
EUROMAT-2011, Montpellier, France - 10.07.2011
Xueyong Pang, Naveed Ahmed, Rebecca Janisch, Alexander Hartmaier
Ab-initio study of the γ-surfaces of aluminium bulk and grain boundaries
ψ-k/CECAM/ccp9 graduate school, Oxford, UK - 26.06.2011
Jun Hua, Christoph Begau, Alexander Hartmaier
Direct calculation of dislocation density tensors from atomistic data
ICMAT 2011, Singapore - 20.06.2011
Alexander Hartmaier, Christoph Begau, Benjamin Schmaling, Anxin Ma
Modeling phase transformations during mechanical loading invited
3rd Sino German Symposium 2011, Xi'an, China - 11.05.2011
Alexander Hartmaier, Christoph Begau
Atomistic modeling of deformation of shape memory alloys: influence of crystal orientation invited
8th Workshop on Advanced Intermetallic and Metallic Materials, Changsha, China - 10.05.2011
Alexander Hartmaier
Atoms, crystals, materials: multiscale modeling of mechanical material behavior invited
Colloquium at Harbin Institute of Technology, Harbin, China - 02.05.2011
Arthur Bialon, Elisaveta Hristova, Sankari Sampath, Arshad Tahir, et al.
Alloying with light elements
Materials Design in Chemical Compound Space Workshop, IPAM, Institute for Pure and Applied Mathematics, UCLA, Los Angeles, USA - 19.04.2011
Alexander Hartmaier
Atome, Kristalle, Werkstoffe: Skalenüberbrückende Modelle in der Werkstoffmechanik invited
Karlsruher Werkstoffkolloquium, Karlsruhe, Germany - 30.03.2011
Alexander Hartmaier
Modellierung von Schädigung und Bruch in mehrphasigen Gefügen invited
10. Tagung Gefüge und Bruch, Bochum - 21.12.2010
Alexander Hartmaier
Atome, Kristalle, Werkstoffe: Skalenüberbrückende Modellierung des Materialverhaltens invited
Physikalisches Kolloquium, TU Dresden, Dresden, Germany - 01.12.2010
Alexander Hartmaier, Aenne Köster, Anxin Ma
Atomistically informed continuum models for deformation and failure of multiphase steels invited
Materials Research Society (MRS) Fall Meeting 2010, Boston, USA - 01.12.2010
Alexander Hartmaier, Naveed Ahmed
Multiscale modeling of deformation of ultra-fine grained metals at high homologous temperatures
Materials Research Society (MRS) Fall Meeting 2010, Boston, USA - 04.11.2010
Benjamin Schmaling, Anxin Ma, Alexander Hartmaier
Transformation induced plasticity modelling based on micromechanical approaches
ICAMS Advanced Discussion on Current Developments, Bochum, Germany - 31.10.2010
Alexander Hartmaier, Jun Hua, Christoph Begau
Large-scale atomistic simulation of nanoindentation: direct calculation of dislocation density tensors from atomistic data
18th European Conference on Fracture (ECF18), Dresden, Germany - 24.10.2010
Elisaveta Hristova, Rebecca Janisch, Ralf Drautz, Alexander Hartmaier
The solubility of carbon in bcc iron under volumetric strain: comparison of DFT and empirical methods
468. Wilhelm und Else Heraeus-Seminar "Ab initio Description of Iron and Steel: Mechanical properties", Ringberg Castle, Tegernsee, Germany - 24.10.2010
Rebecca Janisch, Sankari Sampath, Andreas Böhner, Christian Elsässer, Alexander Hartmaier
Influence of light elements on the mechanical properties of interfaces in transition metals
468. Wilhelm und Else Heraeus-Seminar "Ab initio Description of Iron and Steel: Mechanical properties", Ringberg Castle, Tegernsee, Germany - 25.10.2010
Alexander Hartmaier, Rebecca Janisch
Scale-bridging modelling of mechanical properties of interfaces invited
468. Wilhelm und Else Heraeus-Seminar "Ab initio Description of Iron and Steel: Mechanical properties", Ringberg Castle, Tegernsee, Germany - 07.10.2010
Elisaveta Hristova, Rebecca Janisch, Ralf Drautz, Alexander Hartmaier
The solubility of carbon in bcc iron under volumetric strain: comparison of DFT and empirical methods
Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany - 07.10.2010
Ahmed Shaban, Anxin Ma, Alexander Hartmaier
Multiscale modeling of polycrystal deformation with grain boundary sliding
Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany - 07.10.2010
Benjamin Schmaling, Anxin Ma, Alexander Hartmaier
Transformation induced plasticity modelling based on micromechanical approaches
Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany - 05.10.2010
Xiaohui Zeng, Daniel Rupp, Sabine Weygand, Alexander Hartmaier
Modeling the transition from toughening to embrittlement by grain boundaries in tungsten
Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany - 04.10.2010
Ingo Steinbach, Reza Darvishi Kamachali, Jun Hua, Alexander Hartmaier
Influence of mechanical stresses on grain growth mechanisms in nanocrystalline materials invited
Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany - 04.10.2010
Steffen Brinckmann, Dhiraj Mahajan, Christoph Begau, Alexander Hartmaier
The introduction of a concurrent multiscale model for fcc metals
Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany - 26.09.2010
Reza Darvishi Kamachali, Jun Hua, Ingo Steinbach, Alexander Hartmaier
Mesoscale and atomistic modeling and simulation of grain growth on the nanoscale
Optimising Performance Through Integrated Modelling of Microstructure (OPTIMoM), Queens College Cambridge, UK - 23.09.2010
Alexander Hartmaier
Mikromechanische Modellierung invited
SZMF (Salzgitter Mannesmann Forschung) Summerschool Duisburg, Germany - 08.09.2010
Napat Vajragupta, V. Uthaisangsuk, Benjamin Schmaling, Sebastian Münstermann, et al.
A micromechanical damage simulation of dual phase steels using XFEM and cohesive elements
The 20th International Workshop on Computational Mechanics of Materials 2010, Loughborough, United Kingdom, September 8-10, 2010 - 02.09.2010
Steffen Brinckmann, Dhiraj Mahajan, Christoph Begau, Alexander Hartmaier
The introduction of a concurrent multiscale model for fcc metals
18th European Conference of Fracture (ECF), Dresden, Germany - 02.09.2010
Xiaohui Zeng, Daniel Rupp, Sabine Weygand, Alexander Hartmaier
Transition from toughening to embrittlement by grain boundaries in tungsten
18th European Conference of Fracture (ECF), Dresden, Germany - 30.08.2010
Ahmed Shaban, Anxin Ma, Alexander Hartmaier
Polycrystalline material deformation modeling with grain boundary sliding and damage accumulation
18th European Conference of Fracture (ECF), Dresden, Germany - 26.08.2010
Alexander Hartmaier, Xiaohui Zeng, Daniel Rupp
Fracture and brittle-to-ductile transition in tungsten single and polycrystals
Materials Science and Engineering Conference (MSE) 2010, Darmstadt, Germany - 24.08.2010
Reza Darvishi Kamachali, Jun Hua, Ingo Steinbach, Alexander Hartmaier
Grain growth mechanism in nanocrystalline materials: multi-phase field and molecular dynamics studies
Materials Science and Engineering Conference (MSE) 2010, Darmstadt, Germany - 28.07.2010
Christoph Begau, Alexander Hartmaier
Analyzing dislocation nucleation and multiplication in atomistic nanoindentation simulations
Newcastle Nanoindentation Conference 2, Newcastle, UK - 25.06.2010
Christoph Begau, Alexander Hartmaier
Bestimmung des Versetzungsdichtetensor in atomistischen Simulationen
Fachausschuss Computersimulation, RWTH Aachen, Aachen, Germany - 25.05.2010
Anxin Ma, Alexander Hartmaier
Superalloy single crystal creep modelling in a wide temperature range
Euro Superalloy 2010, Wildbad Kreuth, Germany - 22.03.2010
Rebecca Janisch, Naveed Ahmed, Alexander Hartmaier
Ab-initio characterisation of the mechanical behavior of grain boundaries
DPG Spring Meeting 2010, Regensburg, Germany - 23.03.2010
Alexander Hartmaier, Naveed Ahmed
Dislocation dynamics models of deformation of ultra-fine-grained metals invited
DGM - Arbeitskreis Mikrostrukturmechanik, Aachen, Germany - 03.03.2010
Alexander Hartmaier
Vorhersage von Werkstoffeigenschaften durch skalenüberbrückende Modellierung invited
DGM Strategieworkshop 'Modern Metals' Bonn, Germany - 02.02.2010
Alexander Hartmaier
Verformung und Bruch von Grenzflächen-dominierten Werkstoffen invited
Kolloquium des Instituts für Werkstofftechnik, Universität Siegen, Siegen, Germany - 30.11.2009
Alexander Hartmaier, Rebecca Janisch, Naveed Ahmed, Xiaohui Zeng
Deformation of ultra-fine-grained and nanocrystalline metals: role of dislocation-grain boundary interaction invited
Fall Meeting of the Materials Research Society (MRS), Boston (MA), USA - 30.11.2009
Alexander Hartmaier, Jun Hua, Christoph Begau
On-the-fly analysis of large-scale molecular dynamics simulations: calculating lattice rotation and dislocation density tensors from atomistic data
Fall Meeting of the Materials Research Society (MRS), Boston, USA - 12.11.2009
Dennis Peter, Jan Frenzel, Gunther Eggeler, Alexander Hartmaier
Deformation mechanisms and fracture characteristics of γ-TiAl alloys
7. Materialwissenschaftlicher Tag 2009, Bochum, Germany - 11.10.2009
Jun Hua, Alexander Hartmaier
Determination of dislocation density from atomistic data
ECI Conference on Nanomechanical Testing 2009, Barga, Italy - 12.10.2009
Alexander Hartmaier
Probing mechanical properties of interfaces with nanoindentation: results of large scale atomistic simulations invited
ECI Conference on Nanomechanical Testing 2009, Barga, Italy - 23.09.2009
Marina Prechtel, Rebecca Janisch, Günter Leugering, Alexander Hartmaier, Paul Steinmann
Cohesive element model for simulation of crack growth in composite materials
International Conference on Crack Paths, Vincenza, Italy - 07.09.2009
Rebecca Janisch, Naveed Ahmed, Alexander Hartmaier
Cohesive laws for grain boundaries from ab initio calculations
Euromat 2009, Glasgow, UK - 10.09.2009
Naveed Ahmed, Rebecca Janisch, Alexander Hartmaier
Ab-initio investigation of the mechanical properties of grain boundaries in aluminum
Euromat 2009, Glasgow, UK - 16.08.2009
Alexander Hartmaier
Deformation and failure of interface-dominated materials invited
International Conference on the Strength of Materials, Dresden, Germany - 16.08.2009
Naveed Ahmed, Alexander Hartmaier
Dislocation dynamics study of plasticity and strain-rate sensitivity in ultra-fine grained metals
International Conference on the Strength of Materials, Dresden, Germany - 18.08.2009
Bernhard Eidel, Alexander Hartmaier
Deformation pattern of a Ni-base single-crystalline superalloy in Vickers indentation: crystal plasticity simulation versus experiment
International Conference on the Strength of Materials, Dresden, Germany - 18.08.2009
Xiaohui Zeng, Alexander Hartmaier
Modeling toughening and embrittling due to grain boundaries by dislocation dynamics
International Conference on the Strength of Materials, Dresden, Germany - 17.08.2009
Jun Hua, Alexander Hartmaier
Determination of Burgers vectors from atomistic data
International Conference on the Strength of Materials, Dresden, Germany - 12.07.2009
Xiaohui Zeng, Alexander Hartmaier
Modeling the influence of grain boundaries on fracture toughness by using a combined dislocation - cohesive zone model
International Conference on Fracture, Ottawa, Canada - 07.07.2009
Alexander Hartmaier
Idee und Wirklichkeit: Wie helfen Computersimulationen bei der Werkstoffentwicklung? invited
Physikalisches Kolloquium der Fakultät Physik und Astronomie, Ruhr-Universität Bochum, Germany - 19.06.2009
Alexander Hartmaier
Idea and reality: computer simulations as a tool for material design invited
Science College of the RUB Research School, Ruhr-Universität Bochum, Germany - 24.05.2009
Ingo Steinbach, Alexander Hartmaier, W. T. Hua, X. Song
Multiscale simulation and experimental investigation of grain growth in nanocrystalline metals. invited
Asia Steel Conference, Busan, South Korea - 12.05.2009
Alexander Hartmaier
Interdisciplinary Centre for Advanced Materials Simulation – Multiscale modelling of mechanical properties of materials invited
Committee On Technology Meeting (TechCo-41), Düsseldorf, Germany - 23.03.2009
Rebecca Janisch, Naveed Ahmed, Alexander Hartmaier
Elastic and plastic properties of special grain boundaries in aluminium
DPG Spring Meeting 2009, Dresden, Germany - 05.03.2009
Alexander Hartmaier
Skalenübergreifende Modellierung von Verformung und Bruch von Grenzflächen-dominierten Materialien invited
Forschungszentrum Jülich, Germany - 16.02.2009
Alexander Hartmaier
Skalenüberbrückende Werkstoffmodellierung: Stand der Wissenschaft und Anwendbarkeit in der Praxis invited
TU Chemnitz, Germany - 15.01.2009
Alexander Hartmaier
Idea and reality: how computer simulations support the design of new materials? invited
Faculty of Chemistry, Ruhr-Universität Bochum, Germany - 06.01.2009
Alexander Hartmaier
Dislocations and grain boundaries: how do nanomaterials deform? invited
International Conference on Plasticity, St. Thomas (VI), USA - 04.01.2009
Alexander Hartmaier
Large-scale atomistic simulations of deformation induced grain growth and grain refinement invited
International Conference on Plasticity, St. Thomas (VI), USA - 07.11.2008
Alexander Hartmaier
Scale-bridging modeling of deformation and failure mechanisms in nanostructured metals invited
Materials Modelling Lab Seminar, Oxford University, Oxford, UK - 31.10.2008
Alexander Hartmaier
Idee und Wirklichkeit: Wie helfen Computersimulationen bei der Werkstoffentwicklung? invited
Physikalisches Kolloquium der Fakultät Physik und Astronomie, Bochum - 27.10.2008
Gerolf Ziegenhain, Alexander Hartmaier, Herbert Urbassek
Onset of plasticity under nanoindentation: influence of the interatomic potential
International Conference on Multiscale Materials Modelling, Tallahassee, Florida, USA - 02.09.2008
Daniel Rupp, Xiaohui Zeng, Sabine Weygand, Alexander Hartmaier
Strain rate dependence of the fracture toughness of polycrystalline tungsten in the brittle and semi-brittle regime: experiments and modelling invited
17th European Conference on Fracture, 2008, Brno, Czech Republic - 01.09.2008
Jun Hua, Alexander Hartmaier
Determination of burgers vectors from atomistic data invited
Materials Science and Engineering 2008, Nürnberg - 01.09.2008
Naveed Ahmed, Alexander Hartmaier
2D-dislocation dynamics study of plasticity in ultra fine grained metals invited
Materials Science and Engineering 2008, Nürnberg, Germany - 01.09.2008
Xiaohui Zeng, Alexander Hartmaier
Modelling size effect on fracture toughness in semi-brittle crystals by dislocation dynamics invited
Materials Science and Engineering 2008, Nürnberg - 04.09.2008
Andreas Böhner, Rebecca Janisch, Alexander Hartmaier, Karsten Kellermann, et al.
CVD-diamond coatings on heat-treatable steels – experimental and computational Investigation of the adhesive layer system Cr/CrxCy/diamond invited
Materials Science and Engineering 2008, Nürnberg, Germany - 01.09.2008
, Rebecca Janisch, Alexander Hartmaier
Ab initio study of the ternary layered system Ti-Al-C invited
Materials Science and Engineering 2008, Nürnberg - 25.08.2008
Alexander Hartmaier
Micromechanical modelling of macroscopic material behaviour invited
3rd Computational Materials Science Workshop, Ebernburg, Bad Münster am Stein - 30.06.2008
Alexander Hartmaier, Rebecca Janisch,
Interfacial strength: ab-initio calculation of cohesive zone parameters invited
8th World Congress on Computational Mechanics WCCM8, Venice, Italy - 11.06.2008
Alexander Hartmaier
Multiscale simulation of deformation and failure mechanisms in nanostructured materials invited
Seminar of Institute of High-Performance Computing, Singapore - 02.06.2008
Alexander Hartmaier
Large-Scale atomistic simulations of nanoindentation: Dislocation structures and size effects invited
Materialwissenschaftliches Kolloquium, TU Darmstadt - 30.03.2008
Alexander Hartmaier
Are atomistic simulations with millions of atoms useful for solid mechanics? invited
Mechanics of Time Dependent Materials Conference, Monterey, California, USA
- Kanapy
Python package for generating 3D synthetic polycrystals
https://github.com/ICAMS/Kanapy - pyLabFEA
Python Laboratory for Finite Element Analysis
https://github.com/ICAMS/pyLabFEA
Professional Experience
Since 2008
Professor for Mechanics of Materials at Ruhr-Universität Bochum and director at ICAMS, Germany
2005-2008
Professor for Materials Science at Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
2002-2005
Group leader at Max-Planck-Institut für Metallforschung, Stuttgart, Germany
1999-2002
Research engineering at Hilti Corp., Liechtenstein
1996-1999
Research assistant at Max-Planck-Institut für Metallforschung, Stuttgart, Germany
Education
Dipl.-Phys., Physics, Universität Kaiserslautern
Dr. rer. nat, Physics, Universität Stuttgart