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    • 1. 发明申请
    • PRECIPITATE HARDENING STAINLESS STEEL AND LONG BLADE USING SAME FOR STEAM TURBINE
    • 使用相同的蒸汽涡轮减少不锈钢和长叶片
    • US20120321478A1
    • 2012-12-20
    • US13495386
    • 2012-06-13
    • Shinji OIKAWAHideo YODAMasahiko ARAIHiroyuki DOI
    • Shinji OIKAWAHideo YODAMasahiko ARAIHiroyuki DOI
    • F03B3/12C22C38/52C22C38/50C22C38/44C22C38/48
    • C22C38/50C22C38/44
    • This invention provides a precipitate hardening stainless steel having excellent structure stability, strength, toughness, and corrosion resistance, which requires no sub-zero treating and thus is excellent in terms of productivity, and a long blade for a steam turbine using the same. The following are provided: a precipitate hardening stainless steel, which comprises C at 0.05 mass % or less, N at 0.05 mass % or less, Cr at 10.0 mass % to 14.0 mass %, Ni at 8.5 mass % to 11.5 mass %, Mo at 0.5 mass % to 3.0 mass %, Ti at 1.5 mass % to 2.0 mass %, Al at 0.25 mass % to 1.00 mass %, Si at 0.5 mass % or less, and Mn at 1.0 mass % or less, and the balance is composed of Fe and inevitable impurities; and a long blade for a steam turbine composed of the precipitate hardening stainless steel.
    • 本发明提供了一种具有优异的结构稳定性,强度,韧性和耐腐蚀性的沉淀硬化不锈钢,其不需要次零处理,因此在生产率方面优异,并且使用具有优异的生产率的蒸汽轮机的长叶片。 提供以下:沉淀硬化不锈钢,其含有0.05质量%以下的C,0.05质量%以下的N,10.0质量%〜14.0质量%的Cr,8.5质量%〜11.5质量%的Ni,Mo 1.5质量%至2.0质量%的Ti,0.5质量%至3.0质量%的Al,0.25质量%至1.00质量%的Al,0.5质量%以下的Si,1.0质量%以下的Mn,余量为 由铁和不可避免的杂质组成; 以及由沉淀硬化不锈钢构成的蒸汽轮机的长叶片。