Difference between carbon and nitrogen in thermal stability of metastable 18%Cr-8%Ni austenite

Takuro Masumura, Toshihiro Tsuchiyama, Setsuo Takaki, Tamotsu Koyano, Kazuhiko Adachi

    研究成果: Contribution to journalArticle査読

    15 被引用数 (Scopus)

    抄録

    The effects of carbon and nitrogen addition on the athermal α′-martensitic transformation in metastable 18%Cr-8%Ni austenite are investigated. The thermal stability of austenite in nitrogen-added steel is higher than that in carbon-added steel, and the difference between the effects of carbon and nitrogen addition becomes remarkable as the amount of both elements increases. As the two-step transformation (γ → ε → α′) always occurs in metastable 18%Cr-8%Ni austenite, the suppression of ε-martensite results in the thermal stabilization of austenite. Nitrogen is more effective than carbon for increasing the stacking fault energy, leading to a higher thermal stability of the nitrogen-bearing 18%Cr-8%Ni steels.

    本文言語英語
    ページ(範囲)8-11
    ページ数4
    ジャーナルScripta Materialia
    154
    DOI
    出版ステータス出版済み - 9 2018

    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
    • 金属および合金

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