Hydrogen-induced delayed fracture of a Fe-22Mn-0.6C steel pre-strained at different strain rates

Motomichi Koyama, Eiji Akiyama, Kaneaki Tsuzaki

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36 Citations (Scopus)

Abstract

Hydrogen-induced delayed fracture under loading was investigated in a Fe-22Mn-0.6C twinning-induced plasticity steel that had been pre-deformed at various strain rates. Hydrogen-induced delayed fracture was suppressed by increasing the strain rate of the pre-deformation. In this study on the strain-rate effect, factors affecting the delayed fracture were found to be the negative strain-rate sensitivity of flow stress, stress drop caused by the relaxation phenomenon, and the increase in material strength due to strain aging.

Original languageEnglish
Pages (from-to)947-950
Number of pages4
JournalScripta Materialia
Volume66
Issue number11
DOIs
Publication statusPublished - Jun 1 2012

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All Science Journal Classification (ASJC) codes

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

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