Roll-bonded laminate and method for producing the same

Patent metadata

Field	Value
Publication number	US-11453203-B2
Application number	US-201816483623-A
Country	US
Kind code	B2
Filing date	Feb 7, 2018
Priority date	Feb 7, 2017
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

This invention provides a metal laminate that maintains functionality such as radiation performance and is excellent in dimensional accuracy after press work. Such metal laminate is a roll-bonded laminate composed of 2 or more metal layers, which exhibits a ratio σ/T of the standard deviation σ of thickness T 1 of the outermost layer to thickness T of the roll-bonded laminate of 0% of 4.0%, the thickness T of 2 mm or less, and the deviation of the thickness T of 4.0% or less.

First claim

We claim:

1. A roll-bonded laminate, comprising:
two or more metal layers roll-bonded to each other, wherein an outermost layer of the two or more metal layers is selected from a group consisting of Al, an Al alloy, Cu, a Cu alloy, Mg, an Mg alloy, Ti, a Ti alloy, or SUS,
wherein a ratio σ/T of a standard deviation σ of an outermost layer thicknesses to a thickness T of the roll-bonded laminate is 0% to 1.2%, and
wherein the thickness T is 2 mm or less, and a deviation of the thickness T is 4.0% or less.

2. The roll-bonded laminate according to claim 1 , wherein the standard deviation σ of the outermost layer thicknesses is less than 4.0 μm.

3. The roll-bonded laminate according to claim 1 , wherein the two or more metal layers each independently comprise a metal selected from the group consisting of Al, an Al alloy, Cu, a Cu alloy, Mg, an Mg alloy, Ti, a Ti alloy, or SUS.

4. A method for producing the roll-bonded laminate according to claim 1 , comprising:
bonding the two or more metal layers to each other so as to adjust a change in Vickers hardness of a hardest metal layer among the two or more metal layers before and after bonding within 80, wherein a ratio ΔT/T0 of a reduction ΔT to a total thickness T0 of the two or more metal layers before bonding is less than 1.0.

5. The method for producing the roll-bonded laminate according to claim 4 , wherein bonding the two or more metal layers to each other is performed by subjecting metal layer surfaces to be bonded to each other to sputter etching and roll-bonding the metal layer surfaces subjected to the sputter etching.

6. A molded product comprising the roll-bonded laminate according to claim 1 .

7. The roll-bonded laminate according to claim 2 , wherein the two or more metal layers each independently comprise a metal selected from the group consisting of Al, an Al alloy, Cu, a Cu alloy, Mg, an Mg alloy, Ti, a Ti alloy, or SUS.

8. A molded product comprising the roll-bonded laminate according to claim 2 .

9. A molded product comprising the roll-bonded laminate according to claim 3 .

10. A molded product comprising the roll-bonded laminate according to claim 7 .

11. The roll-bonded laminate according to claim 1 , wherein the standard deviation σ is less than 1.8 μm.

Assignees

• Toyo Kohan Co Ltd

Inventors

• Sadaki Kota
• Kurokawa Teppei
• Hashimoto Yusuke
• HATAKEDA Takafumi

Classifications

• B23K20/2275

  the other layer being aluminium · CPC title

• B23K2103/20

  Ferrous alloys and aluminium or alloys thereof · CPC title

• B32B15/015 Primary

  the said other metal being copper or nickel or an alloy thereof · CPC title

• B32B15/01

  all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)} · CPC title

• B23K20/04

  by means of a rolling mill · CPC title