Overview of dynamic strain aging and associated phenomena in Fe-Mn-C austenitic steels

Motomichi Koyama, Takahiro Sawaguchi, Kaneaki Tsuzaki

研究成果: Contribution to journalReview article査読

23 被引用数 (Scopus)

抄録

This paper presents an overview of the recent works on dynamic strain aging (DSA) of Fe-Mn-C austenitic steels including Hadfield and twinning-induced plasticity (TWIP) steels. First, a model of the DSA mechanism and its controlling factors are briefly explained in terms of Mn-C coupling and dislocation separation. Then, we introduce the effects of DSA on mechanical properties such as work hardening capability, uniform elongation, post-uniform elongation, and fatigue strength. Specifically, we note (1) the pinning effect on extended dislocation for the work hardening, (2) the Poretvin-Le Chatelier banding effect on damage evolution for the tensile elongation, and (3) the crack tip hardening/softening effect on crack resistance for the fatigue strength. We believe that this overview will help in designing advanced highstrength steels with superior ductility and fatigue resistance.

本文言語英語
ページ(範囲)1383-1395
ページ数13
ジャーナルisij international
58
8
DOI
出版ステータス出版済み - 8 15 2018

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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