High-temperature-resistant cobalt-base superalloy

Details High-temperature-resistant cobalt-base superalloy High-temperature-resistant cobalt-base superalloy

C - Chemistry, Metallurgy

22

C

C22C 19/07 (2006.01)

Patent

CA 2677574

The invention relates to a cobalt-base superalloy with the following chemical composition (in % by weight): 25-28 W, 3-8 Al, 0.5-6 Ta, 0-3 Mo, 0.01-0.2 C, 0.01-0.1 Hf, 0.001-0.05 B, 0.01-0.1 Si, remainder Co and unavoidable impurities. This superalloy is strengthened by .gamma.' dispersions and further dispersion mechanisms and has not only good oxidation properties but also, inter alia, improved strength values at high temperatures as compared with cobalt-base superalloys known from the prior art.

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