采用最大输出激光脉冲能量为12.5 J的Thales Laser激光器，对比交叉轧制AZ31镁合金薄板和交叉冷轧钼带的激光冲击成形(LSF)特征，对其破裂行为和微观结构进行分析和探讨。结果表明：采用不同能量密度的激光束对镁合金薄板和钼带两种不同材料进行连续多次激光冲击，实现了其高应变速率冷成形。AZ31薄板和钼带LSF破裂均表现出厚度减薄形式，而钼带LSF过程中发现层裂现象，AZ31薄板LSF试样断口由韧性断裂和脆性断裂混合组成，而钼带LSF试样属于脆性断裂。此外，还讨论了两种金属板料的各向异性和应变速率对高能高应变速率LSF成形性能及其破裂行为的影响。

The cross-rolled AZ31 sheet and the cold-rolled molybdenum strip are shocked by the Thales Laser with the maximum output pulse energy of 12.5 J. Properties of these two laser shock forming (LSF) are compared and then fracture behavior and microstructure are analyzed and discussed. The results show that cold forming of AZ31 sheet and molybdenum strip with high strain rate is realized after continuously repeat laser shock under different energy densities. The LSF fracture behavior of AZ31 sheet and molybdenum strip both perform thickness thinning while a spallation phenomenon is observed during LSF of molybdenum strip. The fracture of AZ31 sheet is a mixture of ductile and brittle fracture, while that of molybdenum strip is the brittle fracture. In addition, the effect of these two metal sheet anisotropy and strain rate on the LSF formability with high energy, high strain rate and fracture behavior is discussed.