Effects of alloying additions and material structures on the high accuracy of the predictive law of creep crack growth for W strengthened 9-12% Cr ferritic heat resistant steel

Ryuji Sugiura, A. Toshimitsu Yokobori, Shinjyu Takamori, Masaaki Tabuchi, Akio Fuji, Mitsuo Yoda, Kenichi Kobayashi, Takeo Yokobori

    研究成果: Article査読

    10 被引用数 (Scopus)

    抄録

    The life of creep crack growth for W strengthened 9-12%Cr steel is sensitive to the alloying additions and material structures, such as lath martensitic structure and grain size caused by inhomogeneous cooling rate in steel ingot during the manufacturing stage, which results in the large scattering of experimental data from the law of creep crack growth life. In this paper, creep crack growth tests were conducted using W strengthened 9-12%Cr steels with various contents of alloying additions and the dimensions of micro-nano structures. The effects of the composition of alloying additions and material structures on the life of creep crack growth for W strengthened 9-12%Cr steel were clarified.

    本文言語English
    ページ(範囲)452-460
    ページ数9
    ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    70
    5
    DOI
    出版ステータスPublished - 2006 5月

    ASJC Scopus subject areas

    • 凝縮系物理学
    • 材料力学
    • 金属および合金
    • 材料化学

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