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US 11,766,846 B2Granted
Clad aluminum alloy products
AssigneeNovelis Inc.
InventorsRajeev G. Kamat, Hashem Mousavi-Anijdan, Rahul Vilas Kulkarni, Juergen Timm, Corrado Bassi, Robert Bruce Wagstaff, Guillaume Florey, Cyrille Bezencon, Samuel R. Wagstaff, David Leyvraz
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Abstract
Provided herein are new clad aluminum alloy products and methods of making these alloys. These alloy products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and joining capabilities. The alloy products can be used in a variety of applications, including automotive, transportation, and electronics applications.
Claims17
A clad aluminum alloy product, comprising:
- a core layer comprising up to 12.0 wt. % Zn, 1.0 to 4.0 wt. % Mg, 0.3 to 3.0 wt. % Cu, up to 0.60 wt. % Si, up to 0.50 wt. % Fe, up to 0.20 wt. % Mn, up to 0.20 wt. % Cr, up to 0.30 wt. % Zr, up to 0.15 wt. % impurities, and aluminum, wherein the core layer has a first side and a second side;
- a first cladding layer on the first side of the core layer, wherein the first cladding layer comprises an aluminum alloy different from the core layer comprising from 0.6 wt. % to 12.0 wt. % Zn, 0.1 to 4.15 wt. % Mg, up to 3.0 wt. % Cu, up to 0.60 wt. % Si, up to 0.50 wt. % Fe, up to 0.20 wt. % Mn, up to 0.20 wt. % Cr, up to 0.30 wt. % Zr, up to 0.15 wt. % impurities, and aluminum;
- wherein in the clad aluminum product is prepared by homogenizing the core and first cladding layers at a temperature from 400° C. to 500° C., solutionizing, and quenching at a rate greater than 50° C./s;
- and wherein the clad aluminum alloy product has a bend angle of from 45 to 120 as measured by a three-point bend test according to VDA Standard 238-100, normalized to 2.0 mm.
1 more element
Dependencies are inferred from the claim text.