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US 10,094,004 B2Granted
Alloy
AssigneeROLLS-ROYCE plc
InventorsMark Christopher Hardy, David Dye, Howard James Stone, Huiyu Yan
Life of this patent
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Abstract
A cobalt-nickel alloy composition comprising by weight (wt %): about 31 to 42 percent cobalt (Co); about 26 to 31 percent nickel (Ni); about 10 to 16 percent chromium (Cr); about 4 to 6 percent aluminum (Al); about 6 to 15 percent tungsten (W); the Co and Ni being present in an atomic ratio of about 1.3:1.
Claims20
A cobalt-nickel alloy composition comprising by weight (wt %):
- 31 to 42 percent cobalt (Co);
- 10 to 16 percent chromium (Cr);
- 4 to 6 percent aluminium (Al);
- 6 to 15 percent tungsten (W);
- a balance of 26 to 31 percent nickel (Ni) and incidental impurities;
- the Co and Ni being present in an atomic ratio between 1.2:1 and 1.4:1, wherein particles of the alloy have an average grain size of 23 to 64 μm.
3 more elements
Dependencies are inferred from the claim text.