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Investigation of the Performance of Flow Models for TWIP Steel


Modeling of metal processing requires constitutive laws able to represent the experimental material behavior. Of the large number of available empirical constitutive equations, only a subset may be fitted accurately to given experimental data. The present work is aimed at identifying the equations that can be used to model the ambient temperature mechanical behavior of high Mn twinning-induced plasticity (TWIP) steels. These are fitted to experimental data for TWIP900 and further compared in terms of their ability to predict springback. The reference springback value is determined experimentally for the same material. The study provides guidelines for the selection of the constitutive model in forming simulations for this type of steel.

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Correspondence to Suleyman Kilic.

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Kilic, S., Ozturk, F. & Picu, C.R. Investigation of the Performance of Flow Models for TWIP Steel. J. of Materi Eng and Perform 27, 4364–4371 (2018).

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  • empirical constitutive equations
  • finite element analysis
  • twinning-induced plasticity (TWIP)