Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al

Motomichi Koyama, Eiji Akiyama, Kaneaki Tsuzaki

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Al effects on strain aging and resistance against hydrogen embrittlement were examined in Fe-18Mn- 0.6C-based twinning-induced plasticity steels deformed at different strain rates. These steels showed a hydrogen-induced fracture when they were pre-deformed at a strain rate of 1.7×10-6 s -1. This fracture was suppressed by increasing the strain rate and Al content. The two important factors for improving the resistance to hydrogen embrittlement from the viewpoint of material strengthening by strain aging were found to be (1) the suppression of dynamic strain aging by increasing the strain rate and Al content, and (2) the suppression of static strain aging under loading by the Al addition.

Original languageEnglish
Pages (from-to)1268-1274
Number of pages7
Journalisij international
Volume53
Issue number7
DOIs
Publication statusPublished - Sep 4 2013

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Hydrogen embrittlement
Steel
Strain rate
Aging of materials
Twinning
Plasticity
Hydrogen

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effects of static and dynamic strain aging on hydrogen embrittlement in twip steels containing al. / Koyama, Motomichi; Akiyama, Eiji; Tsuzaki, Kaneaki.

In: isij international, Vol. 53, No. 7, 04.09.2013, p. 1268-1274.

Research output: Contribution to journalArticle

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