Alloy design for suppressing eutectoid reaction in high nitrogen austenitic steels

S. Takaki, N. Nakamura, H. Goto

    研究成果: ジャーナルへの寄稿会議記事査読

    2 被引用数 (Scopus)

    抄録

    In austenitic steels, nitrogen is an important alloying element in terms of phase balance, austenite stabilizing effect and solid solution hardening. In case a large amount of nitrogen is added to high chromium steels, austenitic stainless steels can be produced in Fe-Cr-N ternary alloys without nickel. For instance, Fe-23%Cr-0.9%N is just the composition which provides stable austenitic structure at room temperature. This alloy shows excellent mechanical properties; high yield stress, large work-hardening rate and good ductility. However, such excellent properties are guaranteed only on the condition that the alloy was quenched from an elevated temperature to avoid an eutectoid reaction; decomposition of austenite to Cr2N and ferrite, because eutectoid structure gives a harmful effect to the ductility of austenitic steels. In this paper, an alloy design for suppressing the eutectoid reaction was suggested and the effect of manganese addition to Fe-Cr-N ternary alloy was presented as an example.

    本文言語英語
    ページ(範囲)249-254
    ページ数6
    ジャーナルMaterials Science Forum
    318
    DOI
    出版ステータス出版済み - 1999
    イベントProceedings of the 1998 5th International Conference on High Nitrogen Steels (HNS) - Stockholm, Swed
    継続期間: 5月 27 19985月 28 1998

    !!!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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