Computer simulation of spinodal decomposition in duplex stainless steels

Yoshiyuki Saito

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    Numerical simulations of phase separation in Fe-Cr-Mo?Ni or Fe-Cr-Mo-Ti quaternary alloys similar to ferrite phases in duplex stainless steles were performed by the Cahn-Hilliard equation. We obtained that the asymptotic behavior of minor element Ni, Mo, Ti in an Fe-Cr-X quaternary alloy along a trajectory of a peak top of the major element Cr is classified into three groups according to the sign of the second derivative of the chemical free energy with respect to the compositions of Cr and X(X=Mo, Ni or Ti]. It is also predicted that that small addition of Mo up to 10% accelerates phase separation of Cr. It seems that the optimum value of Mo exists to enhance the phase separation of Cr in Fe-Cr-Mo ternary alloys. Simulation result indicates that the phase separation of Cr is most enhanced with addition of 1% Mo. The above mentioned simulation results given by the numerical simulation by the Cahn-Hilliard equation were in good agreement with those obtained by the Monte Carlo simulation Theoretical analyses were performed in order to discuss the simulation results. On the basis of theb simulation results Optimum materials design of the duplex stainless steel has been established.

    本文言語English
    ホスト出版物のタイトルMaterials Science Forum
    ページ1509-1514
    ページ数6
    706-709
    DOI
    出版ステータスPublished - 2012
    イベント7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC
    継続期間: 2011 8 12011 8 5

    出版物シリーズ

    名前Materials Science Forum
    706-709
    ISSN(印刷版)02555476

    Other

    Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
    CityQuebec City, QC
    Period11/8/111/8/5

    ASJC Scopus subject areas

    • 材料科学(全般)
    • 凝縮系物理学
    • 機械工学
    • 材料力学

    フィンガープリント

    「Computer simulation of spinodal decomposition in duplex stainless steels」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル