High-strength corrosion-resistant aluminum alloys and methods of making the same
AssigneeNovelis Inc.
InventorsSazol Das, Hany Ahmed, Wei Wen
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Abstract
Disclosed are high-strength aluminum alloys and methods of making and processing such alloys. The aluminum alloys described herein exhibit improved mechanical strength, deformability, and corrosion resistance properties. In addition, the aluminum alloys can be prepared from recycled materials. The aluminum alloy products prepared from the alloys described herein include precipitates to enhance strength, such as MgZn2/Mg(Zn,Cu)2, Mg2Si, and Al4Mg8Si7Cu2.
Claims30
An aluminum alloy comprising about 0.25-1.3 wt. % Si, 1.0-2.5 wt. % Mg, 0.5-1.5 wt. % Cu, up to 0.2 wt. % Fe, up to 3.0 wt. % Zn, up to 0.15 wt. % impurities, and Al, wherein a ratio of Mg to Si (Mg/Si ratio) is from about 1.5 to 1 to about 3.5 to 1 and wherein a ratio of Zn to the Mg/Si ratio (Zn/(Mg/Si) ratio) is from about 0.75 to 1 to about 1.4 to 1.
Dependencies are inferred from the claim text.