Process for the manufacture of aluminum sheets

Details Process for the manufacture of aluminum sheets Process for the manufacture of aluminum sheets

1992-04-22

1994-03-08

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148692, 148693, 148694, 148697, 148698, 148415, 148437, C22F 104

Patent

active

052923860

ABSTRACT:
In order to achieve damage-tolerant properties and sufficient isotropy of aluminum alloys, particularly of type AlLi 8090, subsequent especially to hot-forming of a bar of said aluminum alloy there is interposed a solution heat treatment and quenching, followed by working and subsequent intermediate annealing within a temperature range of from 250.degree. to 475.degree. C. for a period of from 1 to 85 hours. The intermediate annealing is followed by cold forming and subsequent solution heat treatment with the additional purpose of recrystallization, whereupon the recrystallized material is especially cold-formed to a degree of deformation of only up to 8%. Thereafter the sheets having a sheet thickness of from 0.5 to 10 mm are subjected to artificial aging.

REFERENCES:
patent: 4961792 (1990-10-01), Rioja et al.

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