High recycle content aluminum alloys, aluminum alloy products, and methods of producing a brazed product
AssigneeNovelis Koblenz GmbH
InventorsFabian Ritz, Axel Alexander Maria Smeyers, Steven Kirkham, Bernd Jacoby
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Abstract
Disclosed herein are aluminum alloys which may be used for a core alloy. The aluminum alloy may be produced from 50% or greater of recycled aluminum alloy material and exhibit good strength and corrosion resistance for use in heat exchangers. The aluminum alloy tolerates higher amounts of recycled aluminum alloy material while maintaining corrosion resistance and suitability for controlled atmosphere brazing processes. The present disclosure also provides unclad aluminum alloy products and clad aluminum alloy products including the aluminum alloy as a core layer and/or one or more cladding layers.
Claims21
An aluminum alloy comprising 0.7-1.3 wt. % Si, up to 0.6 wt. % Fe, 0.1-0.6 wt. % Cu, 0.9-2 wt. % Mn, up to 0.2 wt. % Mg, up to 0.3 wt. % Cr, up to 0.5 wt. % Zn, up to 0.2 wt. % Ti, up to 0.3 wt. % Zr, up to 0.15 wt. % of impurities, and remainder Al.
A clad aluminum alloy product, comprising:
- a core layer, wherein the core layer has a first side and a second side;
- at least one cladding layer on the first side or the second side;
- wherein core layer and/or the cladding layer comprises 0.7-1.3 wt. % Si, up to 0.6 wt. % Fe, 0.1-0.6 wt. % Cu, 0.9-2 wt. % Mn, up to 0.2 wt. % Mg, up to 0.3 wt. % Cr, up to 0.5 wt. % Zn, up to 0.2 wt. % Ti, up to 0.3 wt. % Zr, up to 0.15 wt. % of impurities, and remainder Al.
A method of forming a brazing product, the method comprising the steps of:
- providing one or more metal parts;
- providing a clad aluminum alloy product on or between the one or more metal parts to form an assembly, wherein the clad aluminum alloy product comprises a core layer;
- brazing the assembly to join the clad aluminum alloy product and the one or more metal parts to produce a brazed assembly;
- optionally applying a flux load before brazing;
- and
- cooling the brazed assembly, wherein the core layer comprises 0.7-1.3 wt. % Si, up to 0.6 wt. % Fe, 0.1-0.6 wt. % Cu, 0.9-2 wt. % Mn, up to 0.2 wt. % Mg, up to 0.3 wt. % Cr, up to 0.5 wt. % Zn, up to 0.2 wt. % Ti, up to 0.3 wt. % Zr, up to 0.15 wt. % of impurities, and remainder Al.
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Dependencies are inferred from the claim text.