Work-hardening mechanism in high-nitrogen austenitic stainless steel

Takuro Masumura, Yuki Seto, Toshihiro Tsuchiyama, Ken Kimura

    研究成果: Contribution to journalArticle査読

    6 被引用数 (Scopus)

    抄録

    The remarkably high work-hardening rate in high-nitrogen austenitic stainless steels is generally believed to be due to the promotion of dislocation accumulation by nitrogen addition. However, analysis of dislocation accumulation behavior by the modified Williamson-Hall/ Warren-Averbach method reveals that no difference to the increment of the dislocation density during deformation exists between austenitic steels with and without nitrogen. Since cross slipping is markedly suppressed in high-nitrogen steels, the moving dislocations are back-stressed by the planar dislocation arrays. This induces the deformation resistance and the high work-hardening rate.

    本文言語英語
    ページ(範囲)678-684
    ページ数7
    ジャーナルMaterials Transactions
    61
    4
    DOI
    出版ステータス出版済み - 2020

    All Science Journal Classification (ASJC) codes

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

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