Hydrogen-assisted cracking threshold of high-strength low-alloy steel

Yusuke Yanagisawa, Wada Yoru, Toshihito Omi, Toshimitsu Yokobori

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

    2 Citations (Scopus)

    Abstract

    Threshold stress intensity factor KIH would be an appropriate index parameter for the cut-off limit in fatigue crack growth analysis in order to prevent hydrogen storage tanks from suffering brittle fractures at hydrogen stations. The KIH factors were evaluated using rising load and constant displacement tests conducted in high-pressure gaseous hydrogen. The following results were obtained: 1. KIH measured under rising load was less than KIH measured under constant displacement. 2. The difference of KIH increased as tensile strength decreased. 3. The difference of KIH may be attributed to the plastic wake of propagating cracks. Hydrogen diffusion behavior at crack tips was also estimated by a finite difference method analysis.

    Original languageEnglish
    Title of host publicationMaterials and Fabrication
    PublisherAmerican Society of Mechanical Engineers (ASME)
    ISBN (Electronic)9780791857007, 9780791857007, 9780791857007, 9780791857007
    DOIs
    Publication statusPublished - 2015 Jan 1
    EventASME 2015 Pressure Vessels and Piping Conference, PVP 2015 - Boston, United States
    Duration: 2015 Jul 192015 Jul 23

    Publication series

    NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
    Volume6B-2015
    ISSN (Print)0277-027X

    Other

    OtherASME 2015 Pressure Vessels and Piping Conference, PVP 2015
    CountryUnited States
    CityBoston
    Period15/7/1915/7/23

    ASJC Scopus subject areas

    • Mechanical Engineering

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