Hydrogen-enhanced localized plasticity-a mechanism for hydrogen-related fracture

H. K. Birnbaum, P. Sofronis

研究成果: Contribution to journalArticle査読

1346 被引用数 (Scopus)

抄録

The mechanisms of hydrogen-related fracture are briefly reviewed and a few evaluative statements are made about the stress-induced hydride formation, decohesion, and hydrogen-enhanced localized plasticity mechanisms. A more complete discussion of the failure mechanism based on hydrogen-enhanced dislocation mobility is presented, and these observations are related to measurements of the macroscopic flow stress. The effects of hydrogen-induced slip localization on the measured flow stress is discussed. A theory of hydrogen shielding of the interaction of dislocations with elastic stress centres is outlined. It is shown that this shielding effect can account for the observed hydrogen-enhanced dislocation mobility.

本文言語英語
ページ(範囲)191-202
ページ数12
ジャーナルMaterials Science and Engineering A
176
1-2
DOI
出版ステータス出版済み - 3 31 1994
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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