Dissimilar welding using spot magnetic pulse welding

Abstract

Magnetic Pulse Welding (MPW) is a solid state joining technique which have increased development in the past few years due to the industrial need in joining dissimilar materials and difficult-to-weld ones. It is an impact welding technique, such as explosive welding (EXW) and laser impact welding (LIW), which share the same basic joining principle, impact-driven solid state welding, but applied to different scales: EXWfor larger parts and LIW for smaller. Defined as a fast, reliable and cost-effective technique, MPW struggles with the lack of knowledge about the welding process despite of the extensive existing literature. The work conducted aimed at joining Al to steel in spot welding configuration widely used in automotive industry. Welds were characterized in order to understand and improve the process.