Selective appearance of-martensitic transformation and dynamic strain aging in Fe-Mn-C austenitic steels

Motomichi Koyama, Takahiro Sawaguchi, Kaneaki Tsuzaki

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

The influence of stress-induced-martensitic transformation on the serrated flow behavior associated with dynamic strain aging was investigated. The-martensitic transformation was controlled by changing the deformation temperature and adding Si to Fe-17Mn-xSi-0.3C alloys. The addition of Si promoted the-martensitic transformation, and suppressed the slip deformation due to solution hardening. The initiation of serrations around room temperature was delayed by the promotion of-martensitic transformation which initiated plastic deformation. The critical stress for the occurrence of serrations and the critical stress for the occurrence of slip deformation were found to have a linear relationship.

Original languageEnglish
Pages (from-to)3051-3063
Number of pages13
JournalPhilosophical Magazine
Volume92
Issue number24
DOIs
Publication statusPublished - 2012 Aug 21
Externally publishedYes

Keywords

  • Fe-based alloy
  • austenitic steel
  • dynamic strain aging
  • martensitic transformation
  • planar defect
  • solution hardening
  • stress-strain measurement
  • tensile testing

ASJC Scopus subject areas

  • Condensed Matter Physics

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