Aluminum alloy sheet and process therefor

Details Aluminum alloy sheet and process therefor Aluminum alloy sheet and process therefor

1975-05-21

1976-06-29

Stallard, W.

Metal treatment

Compositions

Heat treating

148 32, C22F 104

Patent

active

039665062

ABSTRACT:
Wrought aluminum alloy sheet products, displaying good ductility and resistance to grain coarsening when subjected to elevated temperatures as in brazing operations, are prepared by a process in which there is a final cold reduction of at least 50% and a subsequent partial annealing treatment sufficient to effect the recrystallization of 50 to 99% by volume of the metal. The resulting sheet products including composites have a substantially uniform grain structure characterized by the presence of mostly recrystallized grains, by uniformly distributed unrecrystallized grain fragments, and by the absence of coarse grains.

REFERENCES:
patent: 2245166 (1941-06-01), Stroup
patent: 3359085 (1967-12-01), Anderson
patent: 3490955 (1970-01-01), Winter et al.
patent: 3498849 (1970-03-01), Munday et al.

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