Solution heat treatment for aluminum alloys

Details Solution heat treatment for aluminum alloys Solution heat treatment for aluminum alloys

1985-10-03

1987-03-03

Dean, R. O.

Metal treatment

Compositions

Heat treating

148 27, C22F 104

Patent

active

046473181

ABSTRACT:
A method of solution heat treating aluminum alloys, especially aluminum-lithium alloys, by immersing the alloy article in a chloride based neutral salt bath rather than in the conventionally used nitrate based salt bath. A chloride based bath, at least in certain controlled situations, produces an effective solution heat treatment but without the staining and corrosive reaction often encountered with the nitrate based salt baths. A chloride based salt comprising 55% potassium chloride, 40% lithium chloride, and 5% sodium chloride is found to be particularly effective.

REFERENCES:
patent: 2416378 (1947-02-01), Chandler et al.

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