高強度9Cr耐熱鋼の機械的性質及び微細組織に及ぼすWの影響

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タイトル別名
  • Effects of W on Mechanical Properties and Microstructure of a Highstrength 9% Cr Heat Resisting Steel
  • コウ キョウド 9Cr タイネツ コウ ノ キカイテキ セイシツ オヨビ ビサ

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抄録

The change of mechanical properties and microstructure has been investigated by substituting W for a part of Mo in a 9% chromium heat-resisting steel.<BR>Substituting W for a part of Mo has little effect on tensile and impact properties at room temperature as well as creep rupture strength at under 600°C, but shows benefitial effects on long-term creep rupture strength at above 650°C. This is related to the fact that the substitution reduces the coarsening tendecy of precipitates and inhibits the formation of M6C which is considered detrimental to elevated temperature strength.

収録刊行物

  • 鉄と鋼

    鉄と鋼 73 (8), 1034-1040, 1987

    一般社団法人 日本鉄鋼協会

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