Effect of centrifugal barrel finishing/QPQ combined treatment on wear resistance of titanium alloy

doi:10.13251/j.issn.0254-6051.2025.01.048

Abstract

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.

Key words: titanium alloy, centrifugal barrel finishing, QPQ treatment, microhardness, wear resistance

CLC Number:

YanYuan, Li Xiuhong, Li Qihang, Wang Delong, Li Wenhui. Effect of centrifugal barrel finishing/QPQ combined treatment on wear resistance of titanium alloy[J]. Heat Treatment of Metals, 2025, 50(1): 317-324.

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