PRODUCTION OF ALUMINUM ALLOY FOILS HAVING HIGH STRENGTH AND GOOD ROLLABILITY

摘要

An aluminum alloy foil is formed from an alloy containing about 1.2 to 1.7 % by weight Fe and about 0.35 to 0.80 % by weight Si, with the balance aluminu m and incidental impurities. The alloy is continuously strip cast to form a strip having a thickness less than about 25 mm, which is then cold rolled to interanneal gauge and interannealed at a temperature of at least 400 ~C. The interannealed strip is cold rolled and further annealed to form the final fo il product, having excellent rollability combined with high strength of the fin al foil.