Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1997-03-25
1999-08-17
Wyszomierski, George
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148700, 148439, 420533, 420534, 420535, 420544, C22C 2112, C22F 104
Patent
active
059388676
ABSTRACT:
A method of producing an aluminum product comprising providing stock including an aluminum alloy comprising about 4.0 to 4.4 wt. % copper, about 1.25 to 1.5 wt. % magnesium, about 0.35 to 0.5 wt. % manganese, not more than 0.12 wt. % silicon, not more than 0.08 wt. % iron, not more than 0.06 wt. % titanium, the remainder substantially aluminum, incidental elements and impurities; hot working the stock; annealing at 725-875.degree. F.; cold rolling; solution heat treating; cooling; holding for at least 12 hours at room temperature; and cold working from about 4% to 7% thereby producing a product having increased strength and toughness properties.
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Dorward Ralph C.
Kennedy Steven D.
Haynes Gerald D.
Kaiser Aluminum & Chemical Corporation
McGarrigle Philip L.
Wyszomierski George
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