A microstructural based understanding of hydrogen-enhanced fatigue of stainless steels

M. L. Martin, P. Sofronis, I. M. Robertson, T. Awane, Y. Murakami

    Research output: Contribution to journalArticlepeer-review

    41 Citations (Scopus)

    Abstract

    The microstructure immediately beneath the fracture surface produced during fully-reversed fatigue loading of uncharged and hydrogen-charged 304 and 316 stainless steels has been investigated by using focused ion beam machining in conjunction with transmission electron microscopy. The microstructure beneath striations on the fracture surface is dependent on the presence/absence of hydrogen and varies as a function of distance from the surface. The underlying microstructure also is dependent on the morphology of the fracture surface and is distinctly different beneath striations and flat regions. The differences in evolved microstructure are considered in terms of mechanisms by which hydrogen modifies deformation processes.

    Original languageEnglish
    Pages (from-to)28-36
    Number of pages9
    JournalInternational Journal of Fatigue
    Volume57
    DOIs
    Publication statusPublished - 2013

    All Science Journal Classification (ASJC) codes

    • Modelling and Simulation
    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering
    • Industrial and Manufacturing Engineering

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