激光冲击强化6061铝合金的耐磨性能及电化学性能  

Wear Resistance and Electrochemical Properties of 6061 Aluminum Alloys Treated by Laser Shock Peening

作　　者：宁成义 黄亿辉[1] 张广义 张文武[1] Ning Chengyi;Huang Yihui;Zhang Guangyi;Zhang Wenwu(Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China;Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, Jiangsu 215000, China)

机构地区：[1]中国科学院宁波材料技术与工程研究所,浙江宁波315201 [2]中国科学技术大学纳米科学技术学院,江苏苏州215000

出　　处：《激光与光电子学进展》2018年第6期254-259,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金-浙江两化融合联合基金(U1609208);浙江省博士后项目;宁波市自然科学基金(2017A610084)

摘　　要：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, hut 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.

关 键 词：激光技术 激光冲击强化 6061铝合金 电化学性能 耐磨性 

分 类 号：TN249[电子电信—物理电子学]