ALUMINUM ALLOY PRODUCTS HAVING SELECTIVELY RECRYSTALLIZED MICROSTRUCTURE AND METHODS OF MAKING

This application discloses aluminum alloy products having selectively recrystallized microstructure at one or more surfaces of the product, articles of manufacture from such products, and methods of making such products. According to some embodiments, there is an aluminum alloy article comprising an aluminum alloy sheet with a first surface portion, wherein the first surface portion comprises a first cold rolled surface, and wherein the first surface portion has a first recrystallization quotient, a second surface portion opposing the first surface portion, wherein the second surface portion comprises a second cold rolled surface, and wherein the second surface portion has a second recrystallization quotient, and an intermediate portion positioned between the first surface portion and the second surface portion, wherein the intermediate portion has a third recrystallization quotient, and wherein the third recrystallization quotient is less than at least one of the first recrystallization quotient and the second recrystallization quotient. La présente invention concerne de manière générale des produits en alliage d'aluminium ayant une microstructure sélectivement recristallisée sur une ou plusieurs surfaces du produit. L'invention concerne en outre des articles manufacturés fabriqués à partir de tels produits, et des procédés de fabrication de tels produits, tels que par coulage et laminage. L'invention concerne en outre diverses utilisations finales de ces produits, telles que dans des applications automobiles, de transport, électroniques, et industrielles.