Hydrogen Embrittlement Understood

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

Research output: Contribution to journalArticle

183 Citations (Scopus)

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
Article number325
Pages (from-to)1085-1103
Number of pages19
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume46
Issue number3
DOIs
Publication statusPublished - Jun 26 2015

All Science Journal Classification (ASJC) codes

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

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