喷丸强化与涂层复合表面处理改善Ti-6Al-4V钛合金抗微动磨损性能

摘要

研究原始态、喷丸、“喷丸+CuNiIn涂层”复合处理等3种Ti-6Al-4V钛合金在完全滑移状态下的微动磨损行为。研究结果表明，单独喷丸处理不能改善钛合金抗微动磨损性能，但有利于细小磨屑和压实区组成的第三体早期形成，进入稳定磨损状态。“干喷+涂层”的复合处理磨损体积减小，磨痕表面大量细小磨屑的堆积形成了第三体层，改善了Ti-6Al-4V钛合金的抗微动磨损性能。%The fretting wear behavior under gross-slip of Ti-6Al-4V alloy samples with as- received, single shot peening, and shot peening followed by plasma spraying of CuNiIn coating, is studied on. The results show that, single shot peening cannot improve fretting wear resistance of titanium alloy, but promote the forma-tion of third-body consisted of compact zone and debris, operating in steady state. The combined treatment of shot peening followed by plasma spraying can reduce the wear volume, and its worn surface generates third-body from the accumulation of lots ifne debris, improving Ti-6Al-4V alloy fretting wear property.