Method of improving properties of superplastically formed alloys

Details Method of improving properties of superplastically formed alloys Method of improving properties of superplastically formed alloys

1988-02-04

1989-03-21

Rutledge, L. Dewyane

Metal treatment

Compositions

Heat treating

148 1, 148131, 148437, 420528, 420540, 420902, C21D 713

Patent

active

048140252

ABSTRACT:
A method for improving mechanical properties of superplastically formed alloy by healing the cavities formed as result of a superplastic forming process is disclosed. The alloy, such as an aluminum alloy, is superplastically formed and is then placed in an autoclave and hot isostatically pressed at a pressure ranging from about 10,000 psi to 30,000 psi for a time and temperature sufficient to heal cavities.

REFERENCES:
patent: 3496624 (1970-02-01), Karr et al.
patent: 4233831 (1980-11-01), Hamilton et al.
patent: 4354369 (1982-10-01), Hamilton
patent: 4615745 (1986-10-01), Goransson et al.
Industrial Heating, "Hot Isostatic Pressing-a New Heat Treating Technology with Tremendous Potential", Price, P., Jun. 1979, pp. 8-10.

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