The process of Laser Impact Welding is that thin metal plate accelerated by laser-induced ablation collides with another plate at high speed having a collision angle similar to explosive welding.Recently,X.Wang et al.[1] suggested the possibility using such technique to weld a spot area for bonding dissimilar materials.In their experiment,two plates were fixed inclination angle for a making proper collision angle.On the other hand,our experiments tried to weld a thin aluminum foil(thickness; 50 and 100 μm)onto a copper plate(thickness; 1mm)with parallel set-up with a fixed stand-off distance at 50 and 100 μm,which means that there is no initial inclined angle between the two plates.As a result of microstructural characterization,wavy interface,showing the evidence of tight bonding based on explosive welding mechanism,was confirmed at the edge of the welded spot area,and flat interface was confirmed at the center of the welded area.At the beginning of the welding at the center,collision angle is not high enough to cause waves,besides,the angle is considered more close to the edge of the welded spot area.