Rio Tinto Alcan International Limited

Université Du Québec a Chicoutimi

Bruno Bourassa

Alexandre Maltais

Francis Breton

Kun Liu

Clément Boudreault

Dany Tremblay

Xiao-Grant Chen

Lei Pan

The present disclosure concerns aluminum conductor alloys having increased creep resistance, aluminum products comprising same and process using same. In some embodiments, the aluminum conductor alloy comprises, in weight percent: up to about 0.10 Si; up to about 0.5 Fe; up to about 0.30 Cu; between about 0.02 and about 0.1 Mg; up to about 0.04 B; and the balance being aluminum and unavoidable impurities.

Aluminum conductor alloys having improved creeping resistance

The present disclosure provides Al&#x2014;Si&#x2014;Mg aluminum alloys comprising a deliberate addition of Mn between 0.05-0.40 weight percent to increase at least one tensile property (such as the yield strength) of an aluminum product comprising such alloy. The Al&#x2014;Si&#x2014;Mg alloy comprises, in weight percent, 5-9% Si, 0.35-0.75% Mg, 0.05-0.4% Mn, less than 0.15% Fe, up to 0.15% Ti, 0.005-0.03% Sr and the balance being aluminum and unavoidable impurities, wherein the unavoidable impurities may be present in an amount of up to 0.05% each and up to 0.15% total. The present disclosure provides a foundry ingot comprising the above Al&#x2014;Si&#x2014;Mg aluminum alloy, a process for making the above Al&#x2014;Si&#x2014;Mg aluminum alloy and an aluminum alloy obtainable by said process.

Aluminum alloys having improved tensile properties

Growing community of inventors

Jonquière, Canada

Bruno Bourassa