When using high energy shot peening (HESP) technology, the surface layer of the welded joints produced grain breakage and residual compressive stress. When the shot peening strength is the optimal parameter 0.10 MPa, the residual compressive stress reaches a maximum value of 74.02 MPa, dislocation density in welded joints increased significantly and the tensile shear strength of the joint was increased by 18.6% compared to the joint without HESP treatment (205 MPa), and the fracture position of the welded joint was located in the Al alloy base material, these were brought by fine grain strengthening and strain strengthening. When the shot peening strength was 0.05 MPa, the strength of the joint was also improved, but the fracture position of the joint was the same as that without HESP treatment, and they were all in the fusion zone. However, when the shot peening strength was further increased to 0.15 MPa, severe cracks appeared inside the joint, which deteriorates the strength of the Mg/steel joint.

使用高能喷丸强化（HESP）技术时，焊接接头的表面层会产生晶粒破裂和残余压应力。当喷丸强度为最佳参数0.10 MPa时，残余压应力达到最大值74.02 MPa，焊接接头中的位错密度显着增加，与不使用HESP的接头相比，接头的拉伸剪切强度提高了18.6％。处理（205MPa），并且焊接接头的断裂位置位于铝合金基体材料中，这些是通过细晶粒强化和应变强化来实现的。当喷丸强度为0.05 MPa时，接头的强度也有所提高，但接头的断裂位置与未经HESP处理的相同，都在熔合区。然而，