Effect of Heat Treatments on Tribology Property of Ti6Al4V Alloy Under Dry Friction
Ti6Al4V alloy manufactured by electron powder bed fusion(EPBF)was separately heat-treated by stress-relief annealing at 600 ℃,annealing at 800 ℃,and solid solution at 920 ℃ for 1 h.Then,the friction and wear tests were conducted on the samples before and after heat treatment to analyze the properties and mechanism of friction and wear behavior.Results show that the sample annealed at 600 ℃ for 1 h has the optimal wear resistance,and the wear mass loss reduces by 44%.The sample annealed at 800 ℃ for 1 h possesses the optimal anti-friction performance,and the coefficient of friction reduces by 14%.This research provides a simple heat treatment method to improve the friction and wear resistance of Ti6Al4V alloy manufactured by EPBF.
Ti6Al4V alloyelectron powder bed fusionheat treatmentanti-friction performancewear resistance
黄俊媛、张伟、房卫萍、陈静云
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北京航空航天大学机械工程及自动化学院,北京 100191
广东省科学院中乌焊接研究所,广东广州 510650
北京航天发射技术研究所,北京 100076
Ti6Al4V合金 电子粉床熔合 热处理 减摩性能 耐磨性能
National Natural Science Foundation of ChinaGuangdong Province Key R&D Project