Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1994-05-11
1996-06-11
Simmons, David A.
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148552, 148692, 148693, 148696, 148697, 148700, 148417, 148439, 420534, 420537, 420538, 420543, 420547, C22F 104, C22C 2108
Patent
active
055251692
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 1.5 wt. % silicon, about 0.2 to about 0.65 wt. % magnesium, about 0.02 to about 0.1 wt. % copper, about 0.01 to about 0.1 wt. % manganese, about 0.05 to about 0.2 wt. % iron; and the balance being substantially aluminum and incidental elements and impurities; (b) working the body to produce a the sheet; (c) solution heat treating the sheet; and (d) rapidly quenching the sheet. In a preferred embodiment, the solution heat treat is preformed at a temperature greater than 860.degree. F. and the sheet is quenched by a water spray. The resulting sheet has an improved combination of formability, strength and corrosion resistance.
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Aluminum Company of America
Koehler Robert R.
Pearce-Smith David W.
Simmons David A.
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