Abstract: Aluminum alloy/aluminum/steel and aluminum alloy/steel/steel cladding plates were exploded by different explosive welding technologies. The bonded interface's configuration was observed and analyzed, and the wave parameters were measured by optical microscope. The results show that the wave configuration of the bonded interface depends on the explosive welding technology and material properties. A line-straight bonded interface formed when the properties of the base plate and flyer plate were greatly different. However, a regular sine wave shape was easily generated when the base plate and flyer plate were the same or their properties were similar. The wave length and the wave amplitude become bigger with increasing explosive density.