Superalloy material with improved weldability
Patent
·
OSTI ID:1174738
A fusion weldable superalloy containing 0.005-0.5 wt. % scandium. In one embodiment, the superalloy may have a composition similar to IN-939 alloy, but having added scandium and having only 0.005-0.040 wt. % zirconium. A gas turbine component may be formed by an investment casting of such a scandium-containing superalloy, and may include a fusion weld repaired area. A scandium-containing nickel-based superalloy coated with an MCrAlY bond coat will have improved cyclic oxidation resistance due to the sulfur-gettering effect of the scandium.
- Research Organization:
- Siemens Westinghouse Power Corporation, Orlando, FL, (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC21-95MC32267
- Assignee:
- Siemens Westinghouse Power Corporation
- Patent Number(s):
- 6,696,176
- Application Number:
- 10/092,326
- OSTI ID:
- 1174738
- Country of Publication:
- United States
- Language:
- English
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