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采用高能脉冲激光束对AZ31镁合金进行激光冲击强化(LSP)处理,利用UMT-2摩擦磨损试验机对试样进行磨损实验,通过分析磨痕表面和磨屑形貌及磨屑能谱,得出LSP技术可提高AZ31镁合金的耐磨性能。在相同条件下,LSP AZ31镁合金摩擦系数和磨损量均比未冲击试样小,且磨屑更为细小,表明LSP对AZ31镁合金摩擦磨损性能有一定的改善效果。另外,AZ31镁合金经过LSP后,磨损机理由以剥落磨损为主转变为以磨粒磨损为主。
High-energy pulsed laser beam was used to treat AZ31 magnesium alloy by laser shock (LSP), and the wear test was carried out on UMT-2 friction and wear tester. By analyzing the wear scar surface and wear debris energy spectrum, The LSP technology can improve the wear resistance of AZ31 magnesium alloy. Under the same conditions, both the friction coefficient and the wear amount of LSP AZ31 magnesium alloy are smaller than those of the non-impact sample and the wear debris is finer, which shows that LSP can improve the friction and wear properties of AZ31 magnesium alloy. In addition, the AZ31 magnesium alloy after LSP, the wear mechanism by the peel-off wear mainly to abrasive wear-based.