【摘要】 针对应用QPQ处理改善钛合金表面性能时存在表面要求高的问题，对TC4钛合金进行了滚磨光整加工/QPQ复合处理，利用XRD、SEM、超景深光学显微镜、白光干涉仪、粗糙度仪、显微维氏硬度计及摩擦磨损试验机研究了滚磨光整加工和QPQ处理对钛合金表面形貌、物相组成、显微硬度和耐磨性的影响。结果表明：TC4钛合金经滚磨光整加工和QPQ复合处理后的表面生成更均匀的钛的氮化物和氧化物，表面质量得到改善，与仅进行磨削时相比，表面粗糙度Ra下降35.7%,显微硬度提升42.74%,平均摩擦因数降低6.56%,磨损率降低38.89%,磨痕深度减少49.81%,耐磨性显著增加。更多还原

【Abstract】 Aiming at the high surface requirement when applying QPQ treatment to improve titanium alloy surface properties, centrifugal barrel finishing before QPQ treatment was carried out. The effect of centrifugal barrel finishing/QPQ combined treatment on the surface morphology, phase composition, microhardness and wear resistance of TC4 titanium alloy were studied by means of XRD, SEM, ultra-depth of field optical microscope, white light interferometer, roughness meter, micro-Vickers hardness tester and friction and wear tester. The results show that more uniform titanium nitrides and oxides are formed on the surface of TC4 titanium alloy after centrifugal barrel finishing composite QPQ treatment, and the surface quality is improved as the surface roughness Ra decreases by 35.7% than that of only grinding, the microhardness increases by 42.74%, the average friction coefficient decreases by 6.56%, the wear rate decreases by 38.89%, and the wear scar depth decreases by 49.81%, indicating that the wear resistance increased significantly.更多还原