Inhibitory effect of oxygen on hydrogen-induced fracture of A333 pipe steel

Ryosuke Komoda, Masanobu Kubota, Aleksandar Staykov, Patrick Ginet, Francoise Barbier, Jader Furtado

    研究成果: Contribution to journalArticle査読

    6 被引用数 (Scopus)

    抄録

    The effect of oxygen contained in hydrogen gas environment as an impurity on hydrogen environment embrittlement (HEE) of A333 pipe steel was studied through the fracture toughness tests in hydrogen gases. The oxygen contents in the hydrogen gases were 100, 10, and 0.1 vppm. A significant reduction in the J-Δa curve was observed in the hydrogen with 0.1-vppm oxygen. Under given loading conditions, the embrittling effect of hydrogen was completely inhibited by 100 vppm of oxygen. In the case of the hydrogen with 10-vppm oxygen, initially the embrittling effect of hydrogen was fully inhibited, and then subsequently appeared. It was confirmed that 1-vppm oxygen reduced the embrittling effect of hydrogen. The results can be explained by the predictive model of HEE proposed by Somerday et al.

    本文言語英語
    ページ(範囲)1387-1401
    ページ数15
    ジャーナルFatigue and Fracture of Engineering Materials and Structures
    42
    6
    DOI
    出版ステータス出版済み - 6 2019

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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