本申请公开了一种铝合金表面激光强化方法,包括以下步骤：热处理：对峰时效后铝合金进行热处理；将热处理后的铝合金加工成工件；对工件表面进行激光冲击强化,激光功率密度4～12GW/cm～2,脉宽12～16ns,脉冲频率1～3Hz。本申请提供的铝合金表面激光强化方法,所制备的铝合金工件,导电率可以达到43.4％IACS以上,同时抗拉强度保持在521MPa、屈服强度可以达到483MPa,解决了铝合金强度与导电率难以同时满足电枢高速发射承载要求的难题。

This application discloses a laser strengthening method of aluminum alloy surface, including the following steps: heat treatment: heat treatment of the aluminum alloy after peak aging; processing of the aluminum alloy into a workpiece after heat treatment; laser impact strengthening of the workpiece surface, laser power density 4-12GW/cm~2, pulse width 12-16ns, pulse frequency 1-3Hz. The surface of the aluminum alloy can be strengthened by laser, and the conductivity of the workpiece can reach 43.4% IACS or more, while the tensile strength can be maintained at 521MPa and yield strength at 483MPa.