Effect of dissimilar welding on mechanical properties of A7050 and A2024 aluminum alloy

Abstract

The effect of dissimilar welding of 7050/2024 aluminum alloy on mechanical properties and microstructure were analyzed and investigated. The post-welding heat treatments of weldments were carried out and recorded for microstructure, tensile test, hardness and fracture surface in different conditions. The experimental results indicate that the post-welding heat treatment, filler metal chose can increase the mechanical properties. The microstructure and fracture surface of dissimilar welding can evaluate the distribution of precipitation strengthening phase in fusion zone, heat: affected zone and its fracture type.