Transformation-assisted hydrogen desorption during deformation in steels: Examples of α′- and ε-Martensite

Tomohiko Hojo, Motomichi Koyama, Natsuki Terao, Kaneaki Tsuzaki, Eiji Akiyama

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Hydrogen desorption behavior associated with γ-α′ and γ-ε martensitic transformation during tensile tests is investigated in four kinds of alloys with different austenite stabilities. Remarkable deformation-induced hydrogen desorption is detected not only as a result of the γ-α′ martensitic transformation, but also because of the γ-ε martensitic transformation, and the amount of desorbed hydrogen from transformed α′ martensite is more than that of transformed ε martensite. This suggests that the solubility of hydrogen in the ε phase is higher than that in the α′ martensite but lower than that in austenite.

Original languageEnglish
Pages (from-to)30472-30477
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number57
DOIs
Publication statusPublished - 2019 Nov 15

Keywords

  • Austenitic steels
  • Hydrogen desorption
  • Hydrogen embrittlement
  • Martensitic phase transformation
  • Metastable phases

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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