利用激光冲击强化(LSP)处理了6061铝合金,研究了LSP对试样耐磨性能及电化学性能的影响,并对试样的显微硬度和残余应力等进行了测试与分析。结果表明,LSP能有效提高试样的力学性能;LSP试样的表面没有发生物相变化,但硬度与残余应力显著增大,耐腐性明显提高; LSP前后试样的摩擦系数相近,但LSP试样的磨损量减小,耐磨性得到提升。

The 6061 aluminum alloys are treated by laser shock peening (LSP), and the effects of LSP on their wear resistance and electrochemical properties are investigated. The micro-hardness, residual stress, and so on are examined and analyzed. The results show that, LSP can effectively enhance the mechanical properties of samples. On the surfaces of the LSP treated specimens, there is no phase change, but the micro-hardness and residual stress increase obviously, and the corrosion resistance of 6061 aluminum alloys is obviously improved. The friction coefficients before and after the LSP treatment are comparable, but the wear loss of the LSP treated specimen decreases and the wear resistance is significantly improved.