Potential Effects of Short-Range Order on Hydrogen Embrittlement of Stable Austenitic Steels—A Review

Motomichi Koyama, Burak Bal, Dermican Canadinc, Kishan Habib, Toshihiro Tsuchiyama, Kaneaki Tsuzaki, Eiji Akiyama

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Here, we present a review of the hydrogen embrittlement behavior of face-centered cubic (FCC) alloys with short-range order (SRO) of solute atoms. In this paper, three types of FCC alloys are introduced: Fe–Mn–C austenitic steels, high-nitrogen steels, and CoCrFeMnNi high-entropy alloys. The Fe–Mn–C austenitic steels show dynamic strain aging associated with Mn–C SRO, which causes deformation localization and acceleration of premature fracture even without hydrogen effects. The disadvantageous effect of dynamic strain aging on ductility, which is associated with the deformation localization, amplify plasticity-assisted hydrogen embrittlement. Cr–N and Co–Cr–Ni SRO effects in high-nitrogen austenitic steels and high-entropy alloys enhance the dislocation planarity, which causes stress concentration in the grain interior and near the grain boundaries. The stress concentration coupled with hydrogen effects causes quasi-cleavage and intergranular fractures.

Original languageEnglish
Title of host publicationAdvanced Structured Materials
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1-18
Number of pages18
DOIs
Publication statusPublished - 2021

Publication series

NameAdvanced Structured Materials
Volume143
ISSN (Print)1869-8433
ISSN (Electronic)1869-8441

Keywords

  • Austenitic steel
  • Dislocation planarity
  • Dynamic strain aging
  • Hydrogen embrittlement
  • Short-range order

ASJC Scopus subject areas

  • Materials Science(all)

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