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Novel cobalt-base superalloy and cast and welded industrial gas turbine components thereof and method
Novel cobalt-base superalloy and cast and welded industrial gas turbine components thereof and method
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机译:新型钴基高温合金及其铸造和焊接工业燃气轮机部件和方法
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摘要
Cobalt-base superalloys having special utility in the production of industrial gas turbine hot gas path components because of their unique combination of properties in specially heat-treated condition including excellent hot corrosion resistance, stress-rupture strength at high temperature, metallurgical stability, tensile ductility and weldability, consist essentially of 0.3 to 0.6% carbon, 27-35% chromium, 9-16% nickel, 6-9% tungsten, 0.45 to 2.0% tantalum, up to 3.0% hafnium, up to 0.7% zirconium, not more than 2.0% iron, 1.5% manganese and silicon and 0.05% boron, balance cobalt, the carbide formers being selected to satisfy the following equations: ##EQU1##
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