为研究激光冲击强化对6082 铝合金性能的影响，利用波长为1064 nm、脉宽为15 ns、脉冲能量为0~8 J 的Nd∶YAG激光器对6082 铝合金进行工艺试验研究，采用表面粗糙度仪、显微硬度计、X 射线应力分析仪和疲劳试验机分别对试件的表面粗糙度、显微硬度、残余应力和疲劳寿命进行测量。实验结果表明：激光能量为7 J，冲击4 次时，在试件表面引入了坑穴和褶皱等微结构，使得表面形貌高低不平，粗糙度提高了2 倍左右，使得表层材料发生塑性变形以及加工硬化，表面显微硬度提高了43%左右，最大残余压应力达-261 MPa，硬化层深度达700 μm 左右，疲劳寿命提高了6.8 倍左右，即激光冲击强化能够极大地改善6082 铝合金的使役性能。

In order to study the effects of laser peening on properties of 6082 aluminum alloy, 6082 aluminum alloy coupons are treated by Nd∶YAG laser system with the wavelength of 1064 nm, pulse width of 15 ns and pulse energy of 0~8 J. Surface roughness, micro- hardness, residual stress and fatigue life with different laser peening parameters are tested by roughness tester, micro- hardness tester, X- ray diffraction machine and fatigue machine, respectively. The experimental results show that the generated pits and microstructures make the surface uneven, surface roughness increasing about 2 times, also plastic deformation and hardening layer are induced, surface micro- hardness increasing up to about 43% , max compressive residual stress increasing up to - 261 MPa , depth of hardened layer being about 700 μm, and the fatigue life increasing about 6.8 times with the laser energy of 7 J and shock impact times of 4. So laser peening can improve properties of 6082 aluminum alloy significantly.