| 摘要 |
<p>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; 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. The figure shows composition-phase relations for an Al-Cu-Mg system at 930 °F.</p> |
