Role of collision angle during dissimilar Al/Cu magnetic pulse welding
Mehdi Pourabbas, A. Abdollah-zadeh, Morteza Sarvari, Farid Movassagh-Alanagh, M. Pouranvari
Abstract
This paper investigates the influence of collision angle on the interface characteristics and mechanical properties of magnetic pulse welded AA4014 tubes/Cu rods. It is shown that the collision angle, which affects the collision velocity, plays a crucial role in controlling the thickness of intermetallic compounds (IMC) layer and defect formation at the weld interface. The creation of a thin and continuous IMC layer at the weld interface is responsible for the higher load-bearing capacity of the sample welded under a collision angle of 4°. The welds made at higher collision angles are featured by a thick IMC layer containing defects such as micro-cracks, pores and cavities, which reduced the load-bearing capacity of the joint.