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5083/1060/AZ31 and 1060/AZ31/1060 composite plates were fabricated by explosive welding.The microstructure and properties of the bonding interface after explosive welding were investigated.The result shows that all bonding interface had a wavy morphology.With the increasing distance from the detonation point,the wavelength and the amplitude increased.The wavelength and amplitude of the upper bonding interface were less than that of the lower bonding interface.The evolution of microstructure in AZ31 were also investigated,it was found that severe plastic deformation has occurred in magnesium alloy AZ31.Adiabatic shear band and twin structure were observed in AZ31.Shear bond strength were determined by shear bond strength test,the results indicate that the bond strength increases when collision energy is raised in a certain range.The mechanism of wave formation was also discussed in this paper.