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研究了高功率密度激光冲击处理对Ｌｙ１２ＣＺ铝合金的硬度、微观亚结构及断口的影响，结果表明铝合金疲劳寿命的提高是由于材料冲击区域强度和硬度的增加及残余压应力的存在。
The effects of high power density laser shock treatment on the hardness, microstructure and fracture of Ly12CZ aluminum alloy were studied. The results show that the fatigue life of aluminum alloy increases due to the increase of strength and hardness and the residual compressive stress in the impact region.