Effect of ammonia impurity on hydrogen embrittlement of scm440 low-alloy steel in hydrogen gas

Zhang Nan, Ryosuke Komoda, Kazuki Yamada, Cynthia A. Volkert, Lin Tian, Reiner Kirchheim, Petros Sofronis, S. Hosseinisarani Zahra, Mohsen Dadfarnia, Masanobu Kubota, Aleksandar Staykov

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    抄録

    Ammonia (NH3) was added to hydrogen gas as an impurity, then hydrogen embrittlement (HE) of the SCM440 low-alloy steel was investigated by fracture toughness tests. NH3 showed inhibition of the HE when the loading rate was relatively high. However, the inhibitory effect decreased with the decrease in the loading rate, as well as with an increase in the gas pressure. It was found that NH3 acted as both an inhibitor of the HE and a cause of the HE depending on the loading rate and gas pressure.

    本文言語英語
    ホスト出版物のタイトル30th International Ocean and Polar Engineering Conference
    出版社International Society of Offshore and Polar Engineers
    ページ3030-3035
    ページ数6
    ISBN(電子版)9781880653845
    出版ステータス出版済み - 2020
    イベント30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online
    継続期間: 10 11 202010 16 2020

    出版物シリーズ

    名前Proceedings of the International Offshore and Polar Engineering Conference
    2020-October
    ISSN(印刷版)1098-6189
    ISSN(電子版)1555-1792

    会議

    会議30th International Ocean and Polar Engineering Conference, ISOPE 2020
    CityVirtual, Online
    Period10/11/2010/16/20

    All Science Journal Classification (ASJC) codes

    • Energy Engineering and Power Technology
    • Ocean Engineering
    • Mechanical Engineering

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