采用高能纳秒激光对AISI304不锈钢表面进行冲击强化，测定激光冲击前后AISI304不锈钢的抗拉强度和应力应变曲线，系统研究了激光冲击增大不锈钢抗拉强度的机理；测量冲击前后的摩擦系数和磨损性能，研究了激光冲击对AISI304不锈钢摩擦磨损性能的影响规律。结果表明：激光冲击纳米晶化AISI304不锈钢表层，从而提高不锈钢的抗拉强度；激光冲击强化提高AISI304不锈钢的磨损性能，略微增大AISI304不锈钢的摩擦系数。

Tensile properties and wear behaviors of AISI304 stainless steel after laser shock processing (LSP) with different processing parameters are investigated. Ultimate tensile strength (UTS) values and stress-strain curves of all four kinds of tensile samples are measured, and the improvement mechanism of UTS generated by LSP is also revealed. Wear properties and friction coefficients of AISI304 stainless steel with and without LSP are compared, and the influence rule of LSP on wear properties and friction coefficients of AISI304 stainless steel are systematically analyzed. The results show that LSP can improve the UTS of AISI304 stainless steel, which is due to the surface nanocystalization. In addition, LSP enhances the wear properties, and slightly increases the friction coefficients of AISI304 stainless steel.