Structure formation and properties of a copper–aluminum joint produced by ultrasound-assisted explosive welding

Abstract

The effect of ultrasound-assisted explosive welding on the structure formation and the properties of copper–aluminum joints is studied. Ultrasound-assisted explosive welding improves the quality of formed copper–aluminum joints, i.e., enhances their strength and significantly reduces the amount of fused metal over the entire weldability range. It is shown that ultrasound-assisted explosive welding can noticeably extend the weldability range of the copper–aluminum pair to obtain equal-in-strength joints with minimum structural heterogeneity in the wide welding range.