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本研究的主要目的是研究加工工艺对Ti6Al4V生物医学合金显微组织、硬度和摩擦学行为(摩擦和磨损行为)的影响。加工工艺包括传统铸造、热压缩和选择激光熔化。采用X射线衍射技术、维氏硬度测试和Ti6Al4V/Al_2O_3摩擦副的往复式球板磨损实验对Ti6Al4V生物医学合金的冶金、力学和摩擦学性能进行表征。结果表面,加工工艺路线对合金的显微组织、硬度和磨损行为的影响很大。采用选择激光熔化工艺获得的Ti6Al4V合金具有最高的硬度和最佳的耐磨性能,这是由于与采用热压缩和传统铸造工艺相比,选择激光熔化工艺具有显著不同的冷却速率,这使得合金具有明显不同的显微组织。本研究评估和证明选择激光熔化工艺在制备高耐磨Ti6Al4V生物植入体方面具有较大潜力。
The main purpose of this study was to investigate the effect of processing technology on the microstructure, hardness and tribological behavior (friction and wear behavior) of Ti6Al4V biomedical alloys. Processing techniques include traditional casting, thermal compression and selective laser melting. The metallurgical, mechanical and tribological properties of Ti6Al4V biomedical alloys were characterized by X-ray diffraction, Vickers hardness test and reciprocating ball wear test of Ti6Al4V / Al_2O_3 friction pair. The results of the surface, the processing route on the alloy microstructure, hardness and wear behavior. The Ti6A14V alloy obtained by the selective laser melting process has the highest hardness and the best wear resistance due to the significantly different cooling rates of the selective laser melting process compared to the use of thermal compression and the conventional casting process, Significantly different microstructures. This study evaluated and demonstrated the potential of the selected laser melting process in the preparation of high-wear Ti6Al4V bio implants.