Interaction of local elastoplasticity with hydrogen: Embrittlement effects

P. Sofronis, J. Lufrano

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The finite element method was used to solve the coupled elastic-plastic boundary value problem and transient hydrogen diffusion initial boundary value problem. Solutions were obtained at room temperature and under plane strain deformation in the neighborhood of a blunting crack tip under small scale yielding conditions and in the neighborhood of a rounded notch in a 4-point bend specimen. A discussion of the finite element results in conjunction with different mechanisms of hydrogen embrittlement is presented. If a critical amount of hydrogen is required for hydrogen induced crack initiation, the present results predict locations of crack initiation sites at steel bend specimens which are in agreement with experimental observations on the occurrence of the first microcracking event.

Original languageEnglish
Pages (from-to)41-47
Number of pages7
JournalMaterials Science and Engineering A
Volume260
Issue number1-2
Publication statusPublished - Feb 1 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

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

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