Hydrogen Embrittlement Understood

Ian M. Robertson, Petros Sofronis, A. Nagao, M. L. Martin, S. Wang, D. W. Gross, K. E. Nygren

Research output: Contribution to journalArticlepeer-review

Abstract

The connection between hydrogen-enhanced plasticity and the hydrogen-induced fracture mechanism and pathway is established through examination of the evolved microstructural state immediately beneath fracture surfaces including voids, “quasi-cleavage,” and intergranular surfaces. This leads to a new understanding of hydrogen embrittlement in which hydrogen-enhanced plasticity processes accelerate the evolution of the microstructure, which establishes not only local high concentrations of hydrogen but also a local stress state. Together, these factors establish the fracture mechanism and pathway.

Original languageEnglish (US)
Pages (from-to)2323-2341
Number of pages19
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume46
Issue number6
DOIs
StatePublished - Jun 1 2015

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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