Characterisation of crack growth behaviour for W-added 12%Cr ferritic heat resistant steel under the creep-fatigue interaction conditions

T. Fukuda, R. Sugiura, A. Toshimitsu Yokobori, T. Matsuzaki

    研究成果: Article査読

    3 被引用数 (Scopus)

    抄録

    The W-added 12%Cr ferritic heat resistant steel has been developed as a turbine rotor material which is used under high temperature creep-fatigue conditions. In this study, crack growth tests using C(T) specimen under the creep-fatigue interaction conditions were conducted under various conditions of stress holding time, applied stress and temperatures. As a result, the effect of load frequency on crack growth behaviour and its life for this steel was characterised by the three-dimensional curved surface based on the concept of non-equilibrium science. Furthermore, a predictive law of crack growth life under the creep-fatigue interaction conditions was derived based on the concept of Q∗with the transition function of crack growth life from fatigue to creep.

    本文言語English
    ページ(範囲)280-288
    ページ数9
    ジャーナルMaterials at High Temperatures
    32
    3
    DOI
    出版ステータスPublished - 2015 5月 1

    ASJC Scopus subject areas

    • セラミックおよび複合材料
    • 凝縮系物理学
    • 材料力学
    • 機械工学
    • 金属および合金
    • 材料化学

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