Positive and negative effects of hydrogen on tensile behavior in polycrystalline Fe-30Mn-(6 - X)Si-xAl austenitic alloys

Kensuke Yamada, Motomichi Koyama, Takahiro Kaneko, Kaneaki Tsuzaki

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We investigated the tensile properties of Fe-30Mn-(6 - x)Si-xAl (in wt.%, x = 0, 2, 3, 6) austenitic alloys precharged with hydrogen gas at 10 MPa. The Fe-30Mn-6Al alloy showed hydrogen-improved elongation through enhancement of work hardening capacity in the plastic instability condition, although the other alloys did not. This improvement in elongation is considered to be a result of a reduction in stacking fault energy because deformation twinning appeared only in the hydrogen-precharged condition.

Original languageEnglish
Pages (from-to)54-57
Number of pages4
JournalScripta Materialia
Volume105
DOIs
Publication statusPublished - Aug 1 2015

All Science Journal Classification (ASJC) codes

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

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