Abstract
Laser welding of lap joint between AZ31 and A5052 was studied. Formations of an intermetallic layer at the interface and under cutting were the main problems to weld the joint. In order to control the temperature distribution at the interface and the convection behavior of molten metal, effect of machined edge joint techniques was studied by FEM analysis. Laser welding experiment was carried out based on the result of FEM analysis. The strength of the welding joint obtained by the above method was comparable with the strength of joint made by solid state welding technique such as diffusion bonding and frictional welding.
