Twinning models in self-consistent texture simulations of TWIP steels

Aruna Prakash*, Thomas Hochrainer, Eduard Reisacher, Hermann Riedel

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The high work hardening rate and ductility of high manganese austenitic steels is mainly attributed to the strong twinning induced plasticity (TWIP) effect found in the material. With a low stacking fault energy, mechanical twinning acts as a competitive mechanism to the more common dislocation glide. In order to understand the micromechanical behaviour of such steels, especially with respect to texture and anisotropy, constitutive models for twinning which account for the TWIP effect both in orientation changes and plastic behaviour are required. Using a self-consistent texture model, we evaluate two twin modelling approaches in view of prediction of crystallographic texture. Tension experiments were carried out on a rolled TWIP sheet and the textures compared with the simulated results. The evolution of twin volume fractions from the two models is also evaluated.

Original languageEnglish
Pages (from-to)645-652
Number of pages8
JournalSteel Research International
Volume79
Issue number8
DOIs
Publication statusPublished - Aug 2008

Keywords

  • Kalidindi twinning model
  • PTR scheme
  • Texture
  • Twinning induced plasticity
  • TWIP steels
  • VPSC

ASJC Scopus subject areas

  • Metals and Alloys

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