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US6337147B1
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Weldable aluminum product and welded structure comprising such a product
Assignee: Novelis Koblenz GmbH
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Filing: 2000-03-17
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Granted: 2002-01-08
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Expires: 2020-03-17
Abstract
Abstract Improved shape and strength of the weld in a welded structure are obtained by use of a weldable aluminum product comprising a structural component which is a sheet, a plate or an extruded body and is made of an aluminum alloy containing not more than 1.5 wt % Zn. This component has, adhered on at least one side, a cladding layer made of an AA7xxx-series alloy having a corrosion potential lower than that of the alloy of the structural component. The alloy of the structural component is preferably an AA5xxx-series alloy containing Mg in the range 2 to 6 wt %.
Inventors
- 👤 Alfred Johann Peter Haszler
- 👤 Klaus Alfons Mechsner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:39
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/10; B; B23; B23K; B23K10/00; B23K10/02; B23K26/00; B23K26/20; B23K26/32; B23K9/00; B23K9/23; B32; B32B; B32B15/00; B32B15/01; B32B15/016; C22C21/06; B23K2103/00; B23K2103/08; B23K2103/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/926; Y10S428/9265; Y10S428/933; Y10S428/9335; Y10S428/934; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
89 words
A weldable aluminum product comprising a structural component which is a sheet, a plate or an extruded body, and is made of an aluminum alloy containing not more than 1.5 wt % Zn, and adhered on at least one side of said structural component, a cladding layer made of an AA7xxx-series aluminum alloy having a corrosion potential lower than that of said alloy of said structural component, wherein said alloy of said structural component is an AA5xxx-series aluminum alloy containing Mg in the range 2 to 6 wt %.
Claim 2
Dependent Claim
89 words
A weldable aluminum product comprising a structural component which is a sheet, a plate or an extruded body, and is made of an aluminum alloy containing not more than 1.5 wt % Zn, and adhered on at least one side of said structural component, a cladding layer made of an AA7xxx-series aluminum alloy having a corrosion potential lower than that of said alloy of said structural component, wherein said alloy of said structural component is an AA5xxx-series aluminum alloy containing Mg in the range 2 to 6 wt %.
Claim 3
Dependent Claim
26 words
The weldable aluminium product according to claim 1 , wherein said alloy of said structural component contains Zn in the range 0.4 to 1.5 wt %.
Claim 4
Dependent Claim
23 words
The weldable aluminium product according claim 1 , wherein said alloy of said structural component is selected from AA5083, AA5059 and AA5086 alloys.
Claim 5
Dependent Claim
54 words
The weldable aluminium product according to claim 2 , wherein said alloy of said structural component contains, in weight %: Mg 5.0-6.0 Mn 0.6-1.2 Zn 0.4-1.5 Zr 0.05-0.25 Cr 0.3 max. Ti 0.2 max. Fe 0.5 max. Si 0.5 max. Cu 0.4 max. Ag 0.4 max. Sc 0.5 max. balance aluminium and inevitable impurities.
Claim 6
Dependent Claim
26 words
The weldable aluminium product according to claim 1 , wherein said structural component has two said cladding layers, one on each of two opposite sides thereof.
Claim 7
Dependent Claim
30 words
The weldable aluminium product according to claim 1 , wherein each said cladding layer has a thickness which is not more than 20% of the thickness of said structural component.
Claim 8
Dependent Claim
21 words
The weldable aluminium product according to claim 1 , wherein said alloy of each said cladding layer is an AA7072 alloy.
Claim 9
Dependent Claim
30 words
A welded structure comprising at least two aluminum alloy members joined by welding, wherein at least one of said members is a welded aluminum product according to claim 1 .
Claim 10
Dependent Claim
25 words
The welded structure according to claim 8 , which is a part of a marine structure, a ship, a land vehicle or an aerospace vehicle.
Claim 11
Dependent Claim
41 words
A method of use for a weldable aluminium product according to claim 1 , comprising constructing a welded structure, wherein said product is welded to at least one member of said welded structure as a structural member in said welded structure.
Claim 12
Dependent Claim
29 words
The method of use according to claim 10 , wherein the welded structure is a part of a marine structure, a ship, a land vehicle or an aerospace vehicle.
Claim 13
Dependent Claim
24 words
The weldable aluminum product according to claim 2 , wherein said alloy of said structural component is selected from AA5083, AA5059 and AA5086 alloys.
Claim 14
Dependent Claim
25 words
The weldable aluminum product according to claim 2 , wherein said structural component has two said cladding layers, one on each two opposite sides thereof.
Claim 15
Dependent Claim
30 words
The weldable aluminum product according to claim 2 , wherein each said cladding layer has a thickness which is not more than 20% of the thickness of said structural component.
Claim 16
Dependent Claim
30 words
The weldable aluminum product according to claim 4 , wherein each said cladding layer has a thickness which is not more than 20% of the thickness of said structural component.
Claim 17
Dependent Claim
29 words
A welded structure comprising at least two aluminum alloy members joined by welding, wherein at least one said members is a welded aluminum product according to claim 2 .
Claim 18
Dependent Claim
29 words
A welded structure comprising at least two aluminum alloy members joined by welding, wherein at least one said members is a welded aluminum product according to claim 4 .
Claim 19
Dependent Claim
60 words
The weldable aluminium product according to claim 2 , wherein said alloy of said structural component contains, in weight %: Mg 3.0-4.5 Mn 0.4-1.2 Zn 0.4-1.5 Zr 0.05-0.25 Cr 0.3 max. Ti 0.2 max. V 0.2 max Fe 0.5 max. Si 0.5 max. Cu 0.2 max. Ag 0.4 max. Li 0.5 max. Sc 0.5 max. balance aluminium and inevitable impurities.
Claim 20
Dependent Claim
30 words
The weldable aluminium product according to claim 18 , wherein each said cladding layer has a thickness which is not more than 20% of the thickness of said structural component.
Claim 21
Dependent Claim
24 words
The weldable aluminium product according to claim 18 , wherein said alloy of said structural component contains, in weight %, Mg 3.5 to 4.5.
Claim 22
Dependent Claim
24 words
The weldable aluminium product according to claim 18 , wherein said alloy of said structural component contains, in weight %, Mn 0.4 to 0.75.
Claim 23
Dependent Claim
24 words
The weldable aluminium product according to claim 18 , wherein said alloy of said structural component contains, in weight %, Zn 0.4 to 0.9.
References Cited (Backward Citations)
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