Continuously cast magnesium containing, aluminum alloy sheet...

Details Continuously cast magnesium containing, aluminum alloy sheet... Continuously cast magnesium containing, aluminum alloy sheet...

2006-05-23

2006-05-23

Wyszomierski, George (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

C148S552000, C148S691000, C148S692000, C148S696000

Reexamination Certificate

active

07048816

ABSTRACT:
A magnesium, manganese and copper-containing aluminum alloy sheet material suitable for use in high elongation forming processes is produced according to an improved thermomechanical process. The sheet material is produced by continuous casting with an as-cast gage of 5 to 35 millimeters and immediately hot rolling with a final strip exit temperature between 200° C. and 350° C. and then coiling. The hot rolled coil is annealed at 450–560° C. to homogenize the microstructure. After cooling to ambient temperature, the coil is cold rolled to desired sheet thickness with a net gage reduction of 50–90 %. After suitable recrystallization of the cold worked microstructure the sheet is ready for hot, high elongation forming.

REFERENCES:
patent: 4531977 (1985-07-01), Mishima et al.
patent: 4619712 (1986-10-01), Miyamoto et al.
patent: 5540791 (1996-07-01), Matsuo et al.
patent: 6280543 (2001-08-01), Zonker et al.
patent: 57152453 (1982-09-01), None

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