Aluminum alloy brazing sheets for fluxless brazing
AssigneeArconic Technologies LLC
InventorsAndreas Kulovits, Tao Zhou, Baolute Ren, Harry R. Zonker
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Abstract
New aluminum alloy brazing sheets are disclosed. The new aluminum alloy brazing sheets may include a core, an interliner layer adjacent the core, and a braze liner adjacent the interliner layer. The interliner layer may include a first aluminum alloy having at least 0.35 wt. % Si and from 0.05 to 2.0 wt. % Mg. The braze liner may include a second aluminum alloy having 0.05 to 2.0 wt. % Mg. The first aluminum alloy and the second aluminum alloy may include an amount of magnesium sufficient to achieve Tsolidus(IL)≥5° C. Tliquidus(BL). The new aluminum alloy brazing products may be useful, for instance, in fluxfree brazing.
Claims16
A brazing sheet comprising:
- (a) an aluminum alloy core;
- (b) an interliner layer (IL) adjacent the core;
- wherein, the interliner layer (IL) comprises a first aluminum alloy, wherein the first aluminum alloy comprises 0.35 wt. % to 1.0 wt. % Si and 0.1 to 2.0 wt. % Mg;
- (c) a braze liner (BL) adjacent the interliner layer (IL);
- wherein the braze liner (BL) comprises a second aluminum alloy, wherein the second aluminum alloy is different than the first aluminum alloy, and wherein the second aluminum alloy comprises 0.1 to 2.0 wt. % Mg;
- wherein the first aluminum alloy and the second aluminum alloy include an amount of magnesium sufficient to achieve Tsolidus(IL)≥5° C. Tliquidus(BL).
Dependencies are inferred from the claim text.