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    Volume 6, Issue 1 (November 2017)

    Hydrogen Embrittlement Susceptibility of Bainite for High Strength Steel Fasteners

    (Received 26 May 2017; accepted 3 July 2017)

    Published Online: 10 November 2017

    CODEN: MPCACD

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    Abstract

    Industrial fasteners of two different steel microstructures were investigated using incremental step load testing based on ASTM F1624, Standard Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique. The microstructures consisted of tempered martensite and lower bainite. The purpose was to compare hydrogen embrittlement (HE) susceptibility at different hydrogen charging conditions. The results showed that lower bainite exhibited marginally lower HE susceptibility when tested under moderate hydrogen charging conditions (e.g., −1.0 V). At the most severe hydrogen charging potential of −1.2 V, both microstructures are equally embrittled. These results are explained by the differences in the transport and trapping kinetics of hydrogen in bainite as compared to martensite.

    Author Information:

    Saliby, F.
    Department of Mining and Materials Engineering, McGill University, Montreal, Quebec

    Bossard Canada, Quebec

    Brahimi, S.
    Department of Mining and Materials Engineering, McGill University, Montreal, Quebec

    IBECA Technologies Corp., Montreal, Quebec

    Rajagopalan, S.
    Department of Mining and Materials Engineering, McGill University, Montreal, Quebec

    IBECA Technologies Corp., Montreal, Quebec

    Yue, S.
    Department of Mining and Materials Engineering, McGill University, Montreal, Quebec


    Stock #: MPC20170060

    ISSN:2379-1365

    DOI: 10.1520/MPC20170060

    Author
    Title Hydrogen Embrittlement Susceptibility of Bainite for High Strength Steel Fasteners
    Symposium ,
    Committee F16