Hexagonal close-packed Martensite-related Fatigue Crack Growth under the Influence of Hydrogen: Example of Fe-15Mn-10Cr-8Ni-4Si Austenitic Alloy

Kaneaki Tsuzaki, Koki Fukuda, Motomichi Koyama, Hisao Matsunaga

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We investigated the fatigue crack propagation associated with a martensitic transformation from the face-centered cubic to the hexagonal close-packed phase in a Fe-15Mn-10Cr-8Ni-4Si austenitic alloy with and without hydrogen exposure (pre-charging in hydrogen gas at 10 MPa and/or testing in a hydrogen gas environment at 0.7 MPa). Unlike the case of Type 304 austenitic steel, the fatigue crack growth rate of the alloy was not affected by the hydrogen uptake at the present two hydrogen-charging conditions, although secondary cracking was increased by hydrogen.

Original languageEnglish
Pages (from-to)6-9
Number of pages4
JournalScripta Materialia
Volume113
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes

Keywords

  • Austenitic steels
  • Fatigue
  • Hydrogen embrittlement
  • Martensitic phase transformation

ASJC Scopus subject areas

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

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