| 摘要 |
A method of producing an aluminum product having high formability, high fracture toughness, high strength and improved corrosion resistance, the method comprising: (a) providing stock including an aluminum base alloy consisting essentially of about 0.7 to 1.0 wt.% silicon, not more than about 0.3 wt.% iron, not more than about 0.5 wt.% copper, about 0.8 to 1.1 wt.% magnesium, about 0.3 to 0.4 wt.% manganese, and about 0.5 to 0.8 wt.% zinc, the remainder substantially aluminum, incidental elements and impurities; (b ) homogenizing the stock; (c) hot rolling; (d) solution heat treating; (e) cooling by quenching; and (f) artificially aging to produce a T6 temper in t he aluminum product. The figure shows ductility loss as a function of the amoun t of copper in alloys containing either manganese or chromium and zinc relativ e to alloy 6013.
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