Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1994-12-22
1996-12-10
Simmons, David A.
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148552, 148693, 148697, 148700, 148417, 148439, 420534, 420537, 420538, 420546, 420547, C22F 104
Patent
active
055826601
ABSTRACT:
A process for fabricating an aluminum alloy rolled sheet particularly suitable for use for an automotive body, the process comprising: (a) providing a body of an alloy comprising about 0.8 to about 1.3 wt. % silicon, about 0.2 to about 0.6 wt. % magnesium, about 0.5 to about 1.8 wt. % copper, about 0.01 to about 0.1 wt. % manganese, about 0.01 to about 0.2 wt. % iron, the balance being substantially aluminum and incidental elements and impurities: (b) working the body to produce a sheet; (c) solution heat treating the sheet; and (d) rapidly quenching the sheet. In a preferred embodiment, the solution heat treat is performed at a temperature greater than 840.degree. F. and the sheet is rapidly quenched. The resulting sheet has an improved combination of excellent formability and good strength.
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Erickson Rolf B.
Murtha Shawn J.
Aluminum Company of America
Koehler Robert R.
Pearce-Smith David W.
Simmons David A.
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