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US 12,589,450 B2Granted
Brazing sheets, articles formed from brazing sheets, and methods of forming articles
AssigneeArconic Technologies LLC
InventorsHarry R. Zonker, Andreas K. Kulovits
Life of this patent
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Abstract
Brazing sheets, articles formed from or including all or a portion of brazing sheets, and methods of forming articles are provided. A brazing sheet comprises a core layer, a brazing layer, and an interliner layer intermediate the core layer and the brazing layer. The core layer comprises a first aluminum alloy and the core layer is at least partially recrystallized. The brazing layer comprises a 4XXX series aluminum alloy. The interliner layer comprises a second aluminum alloy, and the interliner layer is unrecrystallized.
Claims22
A brazing sheet comprising:
- a core layer comprising a first aluminum alloy, wherein the core layer is at least partially recrystallized;
- a brazing layer comprising a 4XXX series aluminum alloy;
- and
- an interliner layer intermediate the core layer and the brazing layer and comprising a second aluminum alloy comprising, in weight percentages based on the total weight of the second aluminum alloy:
- 0.02 to 0.2 silicon;
- 0.3 to 0.6 copper;
- 1.75 to 1.9 manganese;
- 0.1 to 0.2 chromium;
- 0 to 0.15 zirconium;
- 0.05 to 0.4 iron;
- 0 to 1.0 zinc;
- 0.01 to 0.1 magnesium;
- 0 to 0.3 titanium;
- 0 to 0.1 vanadium;
- 0 to 0.5 bismuth;
- and
- aluminum;
- wherein the interliner layer is unrecrystallized.
15 more elements
Dependencies are inferred from the claim text.