Process for forming an aluminum alloy thin sheet by hot and cold

Details Process for forming an aluminum alloy thin sheet by hot and cold Process for forming an aluminum alloy thin sheet by hot and cold

1990-04-20

1991-05-28

Roy, Upendra

Metal treatment

Compositions

Heat treating

420535, C22F 104, C22C 2100

Patent

active

050191888

ABSTRACT:
Novel aluminum alloy composition and process for producing aluminum rolled semifinished strip material having a grain structure with grain diameters less than about 15 .mu.m, and having less than about 5 vol. % of rod shaped intermetallic phases. The present process comprises the steps of homogenizing rolling ingots of the present alloys, hot-rolling and then cold-rolling the ingots without intermediate annealing, and finally annealing the cold-rolled bars having a thickness between about 40 and 250 .mu.m.

REFERENCES:
patent: 4282044 (1981-08-01), Robertson et al.
patent: 4431463 (1984-02-01), Althoff
patent: 4517034 (1985-05-01), Merchant et al.
patent: 4605448 (1986-08-01), Baba et al.
patent: 4753685 (1988-06-01), Usui et al.
patent: 4855107 (1989-08-01), Teirlinck et al.

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