Deformation Behavior of Borated 18Cr-8Ni Stainless Steel Accompanied by Eutectic Structure during Solidification

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  • MIZUKAMI Hideo
    Corporate Research & Development Laboratories, Sumitomo Metal Industries, Ltd.
  • HIRAKI Sei
    Corporate Research & Development Laboratories, Sumitomo Metal Industries, Ltd.
  • KAWAMOTO Masayuki
    Corporate Research & Development Laboratories, Sumitomo Metal Industries, Ltd.
  • WATANABE Tadao
    Corporate Research & Development Laboratories, Sumitomo Metal Industries, Ltd.

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Other Title
  • 共晶組織を伴うボロン含有18Cr-8Niステンレス鋼の凝固過程における高温変形挙動
  • キョウショウ ソシキ オ トモナウ ボロン ガンユウ 18Cr - 8Ni ステンレス コウ ノ ギョウコ カテイ ニ オケル コウオン ヘンケイ キョドウ

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Description

Tensile strength and ductility behavior of borated 18Cr-8Ni stainless steel samples during solidification has been studied by the technique for high temperature tensile test. Density of samples has been measured by a sessile drop method during solidification.<BR>Borated 18Cr-8Ni stainless steel has formed eutectic morphologies in addition to dendritic structure during solidification. The ratio of eutectic structure increased with increasing boron concentration. Eutectic composition was 2.2 mass% boron from the result of differential thermal analysis. The behavior of tensile strength and ductility has depended on the morphologies of solidification microstructure. When the ratio of eutectic structure was more than 70%, tensile strength and ductility has not appeared until fraction of solid became unity. Density of samples was unaffected by eutectic structure.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 85 (4), 295-300, 1999

    The Iron and Steel Institute of Japan

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