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US 2019/0169714 A1Published application
Alumina-Forming, High Temperature Creep Resistant Ni-Based Alloys
AssigneeUT-Battelle, LLC
InventorsGovindarajan Muralidharan, Bruce A. Pint
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Abstract
An alumina-forming, high temperature creep resistant alloy is composed essentially of, in terms of weight percent: up to 10 Fe, 3.3 to 4.6 Al, 6 to 22 Cr, 0.68 to 0.74 Mn, 5.2 to 6.6 Mo, 0.4 to 1.2 Ti, up to 0.1 Hf, 0.005 to 0.05 La, 0.4 to 0.6 W, 0.1 to 0.35 C, up to 0.002 B, 0.001 to 0.02 N, balance Ni.
Claims20
-6. (canceled)
An alloy consisting essentially of, in weight percent:
- Fe 0.01 to 10
- Al 3.3 to 4.6
- Cr 6 to 22
- Mn 0.68 to 0.74
- Mo 5.2 to 6.6
- Ti 0.4 to 1.2
- Hf up to 0.1
- La 0.005 to 0.05
- W 0.4 to 0.6
- C 0.1 to 0.35
- B up to 0.002
- N 0.001 to 0.02
- Ni balance, wherein the alloy has Al+Cr from 9.3 to 26.6, and wherein the specimen mass change (mg/cm2) after 200 1-hr cycles at 1150° C. in wet air (10% H2O) is no less than −1, and no more than +1.
10 more elements
Dependencies are inferred from the claim text.