Nickel-base superalloy cast article

Details Nickel-base superalloy cast article Nickel-base superalloy cast article

C - Chemistry, Metallurgy

22

C

75/34

C22C 19/03 (2006.01) C22C 19/05 (2006.01)

Patent

CA 1053482

ABSTRACT OF THE DISCLOSURE A nickel-base superalloy cast article is provided with improved stress rupture and creep properties as a result of providing its microstructure with aligned cellular dendrites in combination with the substantial absence of NiAl, carbon, carbides, and Ti. The superalloy consists, in atomic percent, essentially of 4-11 Cr. 5-16 Al, at least 0.5 R?, up to about 10V, up to about 15 Co, up to about 5 Ta, up to about 5W, up to about 1 Mo, up to about 2.5 Mn, up to about 2.5 Rh, with the balance nickel and incidental impurities. The alloy is suited for use in gas turbines.

215680

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