ALUMINIUM ALLOY FOIL AND PRODUCTION METHOD FOR ALUMINIUM ALLOY FOIL

摘要

Provided are: an aluminium alloy foil having excellent moldability; and a production method for alulminium alloy foil. This aluminium alloy foil has a composition containing 1.0% to 1.8% by mass Fe, 0.01% to 0.10% by mass Si, 0.005% to 0.05% by mass Cu, and no more than 0.01% by mass Mn, with the remainder being made up of Al and unavoidable impurities. In crystal orientation analysis per unit of area by backscattered electron analysis, for crystal grains surrounded by a high angle grain boundary which is a grain boundary at which the difference in orientation is at least 15°, average particle size does not exceed 5 µm, maximum particle size/average particle size ≤ 3.0, and stretching in directions of 0°, 45° and 90° with respect to the rolling direction when foil thickness is 30 µm does not exceed 25% in each direction.