Abstract
The present article proposes a constitutive model that includes the stacking fault energy (SFE)-dependence of the deformation behavior of Fe-Mn-C-(Al) TWIP steels. The different kinetics of the SFE-dependent strain hardening of twinned and twin-free grains are accounted for. The high flow stress of TWIP steels investigated is attributed to the combined effect of a large fraction of twinned grains and a low dynamic recovery rate—both effects being associated with its lowest SFE.
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The authors acknowledge the support of POSCO. YE would like to thank the Deutsche Forschungsgemeinschaft for funding through a Mercator professorship.
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Kim, JK., Estrin, Y. & De Cooman, B.C. Constitutive Modeling of the Stacking Fault Energy-Dependent Deformation Behavior of Fe-Mn-C-(Al) TWIP Steels. Metall Mater Trans A 49, 5919–5924 (2018). https://doi.org/10.1007/s11661-018-4910-y
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DOI: https://doi.org/10.1007/s11661-018-4910-y