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Transformation induced plasticity modelling based on micromechanical approaches

Benjamin Schmaling, Ruhr-Universität Bochum, Bochum,

Anxin Ma, Ruhr-Universität Bochum, Bochum, Germany

Alexander Hartmaier, Ruhr-Universität Bochum, Bochum, Germany

Time & Place
  • Date: 07.10.2010
  • Time:
  • Place: Fifth International Conference on Multiscale Materials Modeling (MMM2010), Freiburg, Germany

Abstract

A micromechanical approach is presented to describe the transformation from austenite into martensite in multiphase steels. The strain-induced transformation model is based on evolving shear band intersections in austenite grains, which are estimated by a crystal plasticity model for the austenite deformation. The transformation model is applied to a representative volume element, in which the resulting internal stresses due to the transformation are calculated. The transformation model paves the way for a multiscale approach to accurately describe the deformation of multiphase steels including the microstructural level.

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