Work hardening associated with e{open}-martensitic transformation, deformation twinning and dynamic strain aging in Fe-17Mn-0.6C and Fe-17Mn-0.8C TWIP steels

Motomichi Koyama, Takahiro Sawaguchi, Taekyung Lee, Chong Soo Lee, Kaneaki Tsuzaki

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

The tensile properties of carbon-containing twinning induced plasticity (TWIP) steels and their temperature dependence were investigated. Two steels with carbon concentrations of 0.6% and 0.8% (w/w) were tensile-tested at 173, 223, 273, 294, and 373. K. Three deformation modes were observed during tensile testing: e{open}-martensitic transformation, deformation twinning, and dynamic strain aging. The characteristic deformation mode that contributed to the work hardening rates changed with the deformation temperature and chemical compositions. The work hardening rate in the carbon-containing TWIP steels increased according to the deformation modes in the following order: e{open}-martensitic transformation > deformation twinning > dynamic strain aging.

Original languageEnglish
Pages (from-to)7310-7316
Number of pages7
JournalMaterials Science and Engineering A
Volume528
Issue number24
DOIs
Publication statusPublished - 2011 Sep 15
Externally publishedYes

Keywords

  • Dynamic strain aging
  • E{open}-Martensitic transformation
  • Stacking fault energy
  • Twinning induced plasticity
  • Work hardening rate

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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