Methods of enhancing superplastic formability of aluminum alloys

Details Methods of enhancing superplastic formability of aluminum alloys Methods of enhancing superplastic formability of aluminum alloys

1981-12-28

1985-05-14

Gilden, Leon

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72342, 72364, B21D 2604

Patent

active

045164193

ABSTRACT:
Disclosed is a method of forming metallic materials exhibiting the phenomenon of superplasticity, particularly high strength aluminum alloys, by the technique of superplastic forming by focing an alloy blank into a die cavity using opposing fluid pressures, the pressure on the die side of the blank initially balancing the pressure on the opposite blank side, the die side pressure being reduced as the other pressure is maintained constant or increased to deform the blank at a combined high pressure whereby precision molding occurs as the blank engages the die intimately and cavitation in the blank is reduced or alleviated.

REFERENCES:
patent: 4352280 (1982-10-01), Ghosh
patent: 4354369 (1982-10-01), Hamilton
patent: 4381657 (1983-05-01), Hamilton et al.

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