Journal
ACTA MATERIALIA
Volume 118, Issue -, Pages 140-151Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2016.07.032
Keywords
Crystal plasticity; Constitutive modeling; Deformation twinning; Martensitic phase transformation
Funding
- Deutsche Forschungsgemeinschaft (DFG) within the Collaborative Research Center (SFB) 761 Steel-ab initio
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A dislocation density-based crystal plasticity model incorporating both transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP) is presented. The approach is a physically-based model which reflects microstructure investigations of epsilon-martenSite, twins and dislocation structures in high manganese steels. Validation of the model was conducted using experimental data for a TRIP/TWIP Fe-22Mn-0.6C steel. The model is able to predict, based on the difference in the stacking fault energies, the activation of TRIP and/or TWIP deformation mechanisms at different temperatures. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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