Quenching and partitioning treatment of a low-carbon martensitic stainless steel

Toshihiro Tsuchiyama, Junya Tobata, Teruyuki Tao, Nobuo Nakada, Setsuo Takaki

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    102 Citations (Scopus)

    Abstract

    Quenching and partitioning (Q&P) treatment was applied to a commercial low-carbon martensitic stainless steel, AISI Type 410 (Fe-12Cr-0.1C). The quench interruption temperature was optimized with consideration of the ideal carbon concentration in untransformed austenite after partitioning to lower the Ms temperature to room temperature. After partitioning at an appropriate temperature, a significant fraction of austenite was retained through the enrichment of carbon into the untransformed austenite. It was also suggested that the addition of silicon is not necessarily required for the Q&P treatment of 12Cr steel because of the retardation of carbide precipitation at the partitioning temperature owing to the large amount of chromium. Tensile testing revealed that the Q&P-treated material exhibited a significantly improved strength-ductility balance compared with conventional quench-and-tempered materials due to the transformation-induced plasticity (TRIP) effect by the retained austenite.

    Original languageEnglish
    Pages (from-to)585-592
    Number of pages8
    JournalMaterials Science and Engineering A
    Volume532
    DOIs
    Publication statusPublished - Jan 15 2012

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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