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Ti-6Al-4V具有比强度高的优点,在航空航天、石油化工等领域得到了应用。但Ti-6Al-4V耐摩性差,限制了其应用。针对Ti-6Al-4V耐磨性差的问题,采用激光熔覆技术在Ti-6Al-4V基材表面通过旁轴添加与基材同质的Ti-6Al-4V丝材,同轴送入WC颗粒作为强化相的方式制备表面WC颗粒增强钛基复合材料层。研究了激光功率、扫描速度、送丝速度、送粉量等工艺参数对于表面复合材料层的影响。采用SEM、EDS以及XRD对复合材料层的显微组织进行了观察研究,发现复合材料层中主要包括α-Ti、WC、W2C、TiC、W、(W,Ti)C1-x相。
Ti-6Al-4V has the advantages of high strength, in the aerospace, petrochemical and other fields has been applied. However, Ti-6Al-4V poor wear resistance, limiting its application. In order to solve the problem of poor wear resistance of Ti-6Al-4V, laser cladding was used to add Ti-6Al-4V wires homogeneously to the substrate on the surface of Ti-6Al-4V substrate by co- A surface WC particle reinforced titanium-based composite layer was prepared as a reinforcing phase. The effects of laser power, scanning speed, wire feeding speed and powder feeding on the surface composites were studied. The microstructure of the composite material was observed by SEM, EDS and XRD. It was found that the composite material mainly includes α-Ti, WC, W2C, TiC, W and (W, Ti) C1-x phases.