PRODUCTION OF HIGH STRENGTH ALUMINUM ALLOY FOILS

摘要

An aluminum alloy foil is formed from an alloy containing about 1.2 to 1.7% by weight iron, about 0.4 to 0.8% by weight silicon and about 0.07 to 0.20% by weight manganese, with the balance aluminum and incidental impurities. The alloy is continuously strip cast, e.g. on a belt caster, to form a strip having a thickness of less than about 25 mm, which is then cold rolled to interanneal gauge followed by interannealing at a temperature of about 280 to 350 DEG C. The interanneal strip is cold rolled to final gauge and further annealed to form the final foil product, having high strength and excellent quality.