High-strength solder-plated Al—Mg—Si aluminum material
AssigneeSpeira GmbH
InventorsMartin Christoph Lentz, Nico Eigen, Volker Sass
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Abstract
The present disclosure provides an aluminium material for the manufacture of high-strength, soldered components, including an aluminium alloy. After soldering, the aluminium material is in materially-bonded contact with at least one solder layer. The object of providing an aluminium material is to provide not only good soldering properties and formability, but also high strength. This is achieved because the aluminium alloy of the aluminium material has a solidus temperature, and the aluminium material has an increase in yield strength compared to the state after soldering and cooling.
Claims15
An aluminium composite material for the manufacture of high-strength, soldered components, the aluminium composite material comprising:
- a core layer comprising an aluminium alloy of the type AA6XXX;
- and
- at least one cladding layer comprising an aluminium cladding alloy, the at least one cladding layer being provided on one side or both sides of the core layer;
- wherein the aluminium alloy of the core layer has a solidus temperature Tsol of at least 595° C. and wherein after soldering of the component the aluminium composite material is at least in some areas directly or indirectly materially-bonded with at least one solder layer comprising an aluminium solder alloy, and the aluminium alloy of the core layer is configured to provide, after soldering at at least 595° C. and cooling at an average cooling rate of 0.5° C./s from 595° C. to 200° C. and an artificial ageing at 205° C. for 45 minutes, an increase in the yield strength Rp0.2 of at least 90 MPa compared to the state after soldering and before said artificial ageing;
- wherein the aluminium alloy of the type AA6xxx has the following composition in wt.-%:
- 0.5%≤Si≤0.9%;
- Fe≤0.5%;
- Cu≤0.14%;
- Mn≤0.5%;
- 0.4%≤Mg≤0.8%;
- Cr≤0.3%;
- Zn≤0.3%;
- Ti≤0.3%;
- Zr≤0.1%;
- the remainder Al and unavoidable impurities individually a maximum of 0.05%, in total a maximum of 0.15%;
- wherein the aluminium cladding alloy has the following composition in wt.-%:
- Si≤1.0%;
- Fe≤2.0%;
- Cu≤0.3%;
- Mn≤0.3%;
- Mg≤0.1%;
- Cr≤0.1%;
- Zn≤2.0%;
- Ti≤0.3%;
- Zr≤0.20%;
- the remainder Al and unavoidable impurities individually a maximum of 0.05%, in total a maximum of 0.15%;
- wherein the aluminium solder alloy, to which the aluminium composite material is directly or indirectly materially-bonded, has the following composition in wt.-%:
- 5.0%≤Si 13.0%;
- Fe≤0.8%;
- Cu≤2.5%;
- Mn≤0.1%;
- Mg≤0.1%;
- Cr≤0.1%;
- Zn≤2.5%;
- Ti≤0.3%;
- Zr≤0.1%;
- the remainder Al and unavoidable impurities individually a maximum of 0.05%, in total a maximum of 0.15%;
- and
- wherein the at least one cladding layer has 3% to 15% of the thickness of the entire aluminium composite material.
An aluminium material for the manufacture of high-strength, soldered components, the aluminium material comprising an aluminium alloy of the type AA6xxx, wherein the aluminium alloy has a solidus temperature Tsol of at least 595° C. and wherein after soldering of the component the aluminium material is at least in some areas directly or indirectly in materially-bonded contact with at least one solder layer comprising an aluminium solder alloy, and the aluminium material is configured to have, after soldering at at least 595° C. and cooling at an average cooling rate of 0.5° C./s from 595° C. to 200° C. and an artificial ageing at 205° C. for 45 minutes, has an increase in the yield strength Rp0.2 of at least 90 MPa compared to the state after soldering and before said artificial ageing;
- wherein the aluminium alloy of the type AA6xxx has the following composition in wt.-%:
- 0.5%≤Si≤0.9%;
- Fe≤0.5%;
- Cu≤0.14%;
- Mn≤0.5%;
- 0.4%≤Mg≤0.8%;
- Cr≤0.3%;
- Zn≤0.3%;
- Ti≤0.3%;
- Zr≤0.1%;
- the remainder Al and unavoidable impurities individually a maximum of 0.05%, in total a maximum of 0.15%.
Dependencies are inferred from the claim text.