Refractory superalloys

Details Refractory superalloys Refractory superalloys

1996-03-15

2000-06-06

Yee, Deborah

Alloys or metallic compositions

Osmium or iridium base

420462, 148400, 148405, C22C 2700

Patent

active

060714700

ABSTRACT:
Refractory superalloys consist essentially of a primary constituent selected from the group consisting of iridium, rhodium, and a mixture thereof, and one or more additive elements selected from the group consisting of niobium, tantalum, hafnium, zirconium, uranium, vanadium, titanium and aluminum, and the superalloys having a microstructure containing an FCC-type crystalline structure phase and an L1.sub.2 -type crystalline structure phase are precipitated. Preferably the amount of additive element(s) is 2 to 22 atom %.

REFERENCES:
patent: 3918965 (1975-11-01), Inouye et al.
patent: 5080862 (1992-01-01), Luthra
patent: 5234774 (1993-08-01), Hasegawa et al.
Binary Alloy Phase Diagrams V2 ed by Thaddeus Massalski; Jun. 1987; pp. 1423-1424, 1430-1441, 1689, 1691, 1975, 1977, 1979-1981; 85 1986.

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