Processing of gamma titanium-aluminide alloy using a heat treatm

Details Processing of gamma titanium-aluminide alloy using a heat treatm Processing of gamma titanium-aluminide alloy using a heat treatm

1995-01-23

1997-03-11

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148670, C22F 118

Patent

active

056096984

ABSTRACT:
An as-cast gamma titanium-aluminide alloy, typically having a composition of from about 45.0 to about 48.5 atomic percent aluminum, is pre-HIP heat treated at a temperature of from about 1900.degree. F. to about 2100.degree. F. for a time of from about 50 to about 5 hours. The gamma titanium-aluminide alloy is thereafter hot isostatically pressed at a temperature of about 2200.degree. F. Hot isostatic pressing is preferably followed by a further heat treatment at a temperature of about 1850.degree.-2200.degree. F.

REFERENCES:
patent: 5076858 (1991-12-01), Huang et al.
patent: 5190603 (1993-03-01), Nazmy et al.
patent: 5256202 (1993-10-01), Hanamura et al.
patent: 5417781 (1995-05-01), McQuay et al.

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