The role of hydrogen in hydrogen embrittlement fracture of lath martensitic steel

Akihide Nagao, Cynthia D. Smith, Mohsen Dadfarnia, Petros Sofronis, Ian M. Robertson

    研究成果: ジャーナルへの寄稿学術誌査読

    237 被引用数 (Scopus)

    抄録

    The microstructure associated with the hydrogen-induced features flat and quasi-cleavage on the fracture surface of a lath martensitic steel has been visualized in a transmission electron microscope by using focused-ion beam machining to extract samples perpendicular to the fracture surface. Beneath both hydrogen-induced fracture surfaces there is direct evidence, in the form of intense slip bands and destruction of lath boundaries, for significant plasticity. These observations are considered in terms of the fundamental hydrogen embrittlement mechanisms, and the conclusion is reached that the failure is driven by a hydrogen-enhanced and plasticity-mediated decohesion mechanism.

    本文言語英語
    ページ(範囲)5182-5189
    ページ数8
    ジャーナルActa Materialia
    60
    13-14
    DOI
    出版ステータス出版済み - 8月 2012

    !!!All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • セラミックおよび複合材料
    • ポリマーおよびプラスチック
    • 金属および合金

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