Aluminum alloy material for monolayer heat-joining with excellent deformation resistance

Abstract

To provide an aluminum alloy material having a heat-joining function in monolayer, in which a decrease in deformation resistance caused by working before brazing is suppressed. The present invention is an aluminum alloy material including Si: 1.5 mass % to 5.0 mass %, Mn: 0.05 mass % to 2.0 mass %, Fe: 0.01 mass % to 2.0 mass %, and balance: Al and inevitable impurities and having a heat-joining function in monolayer. The aluminum alloy material has a fibrous structure, the number density of second phase particles including an Si-based compound or an AlMnFeSi-based compound and having an equivalent circle diameter of 5.0 μm to 10.0 μm is 1,000/mm2 or less, the work hardening exponent n between two points from a nominal strain that is 0.9 times the nominal strain at maximum load to the nominal strain at maximum load is 0.03 or more, and the local elongation is 1% or more.

Dependencies are inferred from the claim text.