# US 9,038,702 B2 · System and method of producing multi-layered alloy products

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- Number: US 9,038,702 B2
- Document ID: US9038702B2
- Status: Granted
- Kind: B2
- Application number: 13/971,101
- Filed: 2013-08-20
- Published: 2013-12-19
- Granted: 2015-05-26
- Earliest claimed: 2009-03-31
- Assignees: Alcoa Inc.
- Applicants: Alcoa Inc.
- Inventors: Men G. Chu; Jeffrey J. Shaw
- Web page: https://patentgrep.com/patent/US9038702B2

## CPC

- B05D 1/36: Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D 3/0218: {Pretreatment, e.g. heating the substrate}
- B05D 3/10: by other chemical means
- B05D 3/102: {Pretreatment of metallic substrates (C23C takes precedence)}
- B22D 7/02: Casting compound ingots of two or more different metals in the molten state, i.e. integrally cast
- B22D 7/06: Ingot moulds or their manufacture
- B22D 7/064: {Cooling the ingot moulds}
- B22D 11/007: {of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots (casting of composite ingots in definite lengths B22D7/02)}
- B22D 11/0631: {formed by a travelling straight surface, e.g. through-like moulds, a belt}
- B22D 19/00: Casting in, on, or around objects which form part of the product (B22D23/04 takes precedence; alumino-thermic welding B23K23/00; coating by casting molten material on the substrate C23C6/00)
- B22D 25/00: Special casting characterised by the nature of the product (B22D15/02, B22D17/16, B22D19/00 take precedence; casting stereotype plates B41D3/00)
- B23K 20/04: by means of a rolling mill
- B23K 20/2336: {both layers being aluminium}
- B23K 20/24: Preliminary treatment
- B32B 15/016: {all layers being formed of aluminium or aluminium alloys}
- C22F 1/04: of aluminium or alloys based thereon
- B23K 2101/18: Sheet panels
- B23K 2103/10: Aluminium or alloys thereof
- B23K 2103/18: Dissimilar materials
- Y10T 428/12639: Adjacent, identical composition, components
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

System and method of producing multi-layered aluminum alloy products are disclosed. A multi-layered aluminum alloy product may be formed by first heating a first aluminum alloy to a first temperature where the first temperature is at least about 5° C. lower than the eutectic temperature of the first aluminum alloy, second heating a second aluminum alloy to a second temperature where the second temperature is at least about 5° C. higher than the liquidus temperature of the second aluminum alloy, and coupling the second aluminum alloy to the first aluminum alloy to produce a multi-layered aluminum alloy product.

## Claims

### Claim 1

A method comprising:
producing a first aluminum alloy having a horizontal upper surface;
heating the first aluminum alloy to a first temperature to form a heated first aluminum alloy, wherein the first temperature is at least about 1° C. lower than the eutectic temperature of the first aluminum alloy;
producing a liquid second aluminum alloy;
heating the liquid second aluminum alloy to a second temperature, wherein the second temperature is at least about 5° C. higher than the liquidus temperature of the second aluminum alloy; and
contacting the liquid second aluminum alloy with the horizontal upper surface of the heated first aluminum alloy thereby producing a first multi-layered aluminum alloy product, wherein the heating the first aluminum alloy step occurs before the contacting step.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first temperature is at least about 2° C. lower than the eutectic temperature.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first temperature is at least about 3° C. lower than the eutectic temperature.

### Claim 4 (depends on 1)

The method of claim 1, wherein the first temperature is at least about 4° C. lower than the eutectic temperature.

### Claim 5 (depends on 1)

The method of claim 1, wherein the first temperature is at least about 200° C. lower than the eutectic temperature.

### Claim 6 (depends on 1)

The method of claim 1, wherein the first temperature is at least about 300° C. lower than the eutectic temperature.

### Claim 7 (depends on 1)

The method of claim 1, wherein the first temperature is at least about 500° C. lower than the eutectic temperature.