Effect of ultra-grain refinement on the tensile behaviour of an austenitic steel charged with hydrogen

Arnaud Macadre, Koichi Tsuboi, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The behavior of a metastable austenitic steel was investigated. The chemical composition allows a reversion treatment from martensite to produce different austenite grain sizes (1-65 μm). Cathodic charging was used to investigate the mechanical response of the steel to pre-charged hydrogen, and whether ultra-grain refinement is an effective means to curb hydrogen embrittlement. The ultra-fine grained material retained a ductile behavior despite the large strength increase, with some intergranular surface cracking while the larger grained material showed large areas of brittle cracking. TEM observation showed the effect of hydrogen charging on the dislocation behavior.

    Original languageEnglish
    Title of host publicationMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
    Pages2361-2368
    Number of pages8
    Publication statusPublished - Feb 11 2014
    EventMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013 - Montreal, QC, Canada
    Duration: Oct 27 2013Oct 31 2013

    Publication series

    NameMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
    Volume4

    Other

    OtherMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
    CountryCanada
    CityMontreal, QC
    Period10/27/1310/31/13

    All Science Journal Classification (ASJC) codes

    • Mechanics of Materials

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