Enumeration of the hydrogen-enhanced localized plasticity mechanism for hydrogen embrittlement in structural materials

May L. Martin, Mohsen Dadfarnia, Akihide Nagao, Shuai Wang, Petros Sofronis

Research output: Contribution to journalReview article


This paper presents a review of recent experimental evidence and simulation results enumerating the development of the hydrogen-enhanced localized plasticity (HELP) mechanism as a viable hydrogen embrittlement mechanism for structural materials. A wide range of structural materials, including ferritic, martensitic, and austenitic steels, iron, and nickel are covered by the studies reviewed here, as are a variety of mechanical loading conditions and hydrogen charging conditions, supporting the concept that, despite differences in failure mode, there is a universality to the HELP mechanism.

Original languageEnglish (US)
Pages (from-to)734-750
Number of pages17
JournalActa Materialia
StatePublished - Feb 15 2019



  • Continuum and atomistic simulations
  • Failure
  • HELP
  • Hydrogen embrittlement
  • Steel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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