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PRECIPITATION HARDENING MARTENSITIC STAINLESS STEEL, TURBINE COMPONENT FORMED OF SAID MARTENSITIC STAINLESS STEEL, AND TURBINE INCLUDING SAID TURBINE COMPONENT
PRECIPITATION HARDENING MARTENSITIC STAINLESS STEEL, TURBINE COMPONENT FORMED OF SAID MARTENSITIC STAINLESS STEEL, AND TURBINE INCLUDING SAID TURBINE COMPONENT
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机译:沉淀硬化马氏体不锈钢,由所述马氏体不锈钢制成的涡轮组件以及包括所述涡轮组件的涡轮
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摘要
It is an objective of the invention to provide a precipitation-hardening martensitic stainless steel having a far better balance between a high mechanical strength and a high toughness than conventional ones as well as having good corrosion resistance properties. There is provided a precipitation-hardening martensitic stainless steel throughout which precipitates of intermetallic compounds are dispersed, the martensitic stainless steel including: 0.1 mass % or less of C; 11 to 13 mass % of Cr; 7.5 to 11 mass % of Ni; 0.9 to 1.7 mass % of Al; 0.85 to 1.35 mass % of Mo; 1.75 to 2.75 mass % of W; and the balance including Fe and inevitable impurities, in which “[Mo content]+0.5×[W content]” is from 1.9 mass % to 2.5 mass %, and “[Mo content]/[W content]” is from 0.4 to 0.6.
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