Delaying final stretching for improved aluminum alloy plate prop

Details Delaying final stretching for improved aluminum alloy plate prop Delaying final stretching for improved aluminum alloy plate prop

1992-01-02

1993-12-28

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148550, 148697, 148698, 148699, 148700, 148701, 148702, 148689, 148690, 148415, 148438, 148439, C22F 104

Patent

active

052735940

ABSTRACT:
The present invention provides a method for improving aluminum alloy plate product properties by delaying final stretching of the plate product. During processing of the product, a time interval or intentional delay is provided between the final cold rolling step and the final stretching step. By delaying the final stretching procedure, an aluminum alloy plate product is provided with an improved fracture toughness without significant decrease in strength values. The method of intentionally delaying final stretching is particularly adapted for 2000 series aluminum alloys.

REFERENCES:
patent: 4294625 (1981-10-01), Hyatt et al.
patent: 4808248 (1989-02-01), Ozelton et al.

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