Creep property of austenitic stainless steel with lath structure formed by displacive reversion

Nobuo Nakada, Daisuke Fukae, Tomoyuki Kitaura, Toshihiro Tsuchiyma, Setsuo Takaki

    研究成果: 書籍/レポート タイプへの寄稿会議への寄与

    抄録

    The effectiveness of microstructure control using displacive reversion on creep property was verified in a metastable austenitic stainless steel with a chemical composition of Fe-14%Cr-11%Ni. The steel plates were cold-rolled until the austenite phase fully transforms to deformation-induce α' martensite, and then rapidly heated to 923K to reverse the martensite to austenite. By the thermomechanical treatment, fine lath austenitic structure containing high-density dislocation was formed with a mechanism of displacive reversion from deformation-induced α' martensite to austenite. The thermomechanical-treated specimen with lath structure had approximately two times longer creep fracture lifetime compared to the specimen with equiax-grained structure. This results means that the microstructure control to lath structure effectively enhances creep property of austenitic heat-resistant steel.

    本文言語英語
    ホスト出版物のタイトル65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
    ページ4278-4287
    ページ数10
    5
    出版ステータス出版済み - 2010
    イベント65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010 - Rio de Janeiro, ブラジル
    継続期間: 7月 26 20107月 30 2010

    その他

    その他65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
    国/地域ブラジル
    CityRio de Janeiro
    Period7/26/107/30/10

    !!!All Science Journal Classification (ASJC) codes

    • 材料力学

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