Cobalt-base superalloy and cast and welded industrial gas...

Details Cobalt-base superalloy and cast and welded industrial gas... Cobalt-base superalloy and cast and welded industrial gas...

C - Chemistry, Metallurgy

22

C

75/16, 60/176

C22C 19/07 (2006.01) C21D 9/00 (2006.01) F02B 13/00 (2006.01)

Patent

CA 1260292

NOVEL COBALT-BASE SUPERALLOY AND CAST AND WELDED INDUSTRIAL GAS TURBINE COMPONENTS THEREOF Abstract of the Disclosure Cobalt-base superalloys having special utility in the production of industrial gas turbine hot gas path components because of their unique combination of properties 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 equation: Image = 0.4 to 0.8.

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