Two-phase chromium-niobium alloys exhibiting improved mechanical properties at high temperatures
Patent
·
OSTI ID:5264022
The specification discloses chromium-niobium alloys which exhibit improved mechanical properties at high temperatures in the range of 1250 C and improved room temperature ductility. The alloys contain a Cr[sub 2]Nb-rich intermetallic phase and a Cr-rich phase with an overall niobium concentration in the range of from about 5 to about 18 at. %. The high temperature strength is substantially greater than that of state of the art nickel-based superalloys for enhanced high temperature service. Further improvements in the properties of the compositions are obtained by alloying with rhenium and aluminum; and additional rare-earth and other elements. 14 figures.
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- PTO; EDB-94-064138
- Patent Number(s):
- US 5282907; A
- Application Number:
- PPN: US 7-915096
- OSTI ID:
- 5264022
- Country of Publication:
- United States
- Language:
- English
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