Nickel-based superalloy having high mechanical strength at a high temperature
AssigneesSafran, Universite De Nantes, Centre National De La Recherche Scientifique
InventorsJérémy Rame, Edern Menou, Clara Desgranges, Franck Tancret
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Abstract
A nickel-based superalloy includes, in weight percent, 4 to 6% aluminum, 5 to 8% cobalt, 6 to 9% chromium, 0.1 to 0.9% hafnium, 2 to 4% molybdenum, 5 to 7% rhenium, 5 to 7% tantalum, 2 to 5% tungsten, 0 to 0.1% silicon, the balance being of nickel and unavoidable impurities.
Claims16
A nickel-based superalloy consisting of, in weight percent, 4 to 6% aluminum, 5 to 8% cobalt, 6 to 9% chromium, 0.1 to 0.9% hafnium, 2.5 to 4% molybdenum, 5 to 7% rhenium, 5 to 7% tantalum, 2 to 5% tungsten, 0 to 0.1% silicon, the balance consisting of nickel and unavoidable impurities, wherein a ratio NFP defined by equation (1) is greater than or equal to 0.74:
- NFP
- =
- [
- %
-
- Ta
- +
- 1
- ,
- 5
-
- %
-
- Hf
- +
- 0
- ,
- 5
-
- %
-
- Mo
- -
- 0
- ,
- 5
-
- %
-
- Ti
- ]
- [
- %
-
- W
- +
- 1
- ,
- 2
-
- %
-
- Re
- ]
- .
- (
- 1
- )
Dependencies are inferred from the claim text.