Mechanical Properties and Wear Resistances of TiC or B4C Reinforced Ti-6Al-4V Prepared by Spark Plasma Sintering
Titanium and its alloys have excellent specific strength and corrosion resistance. However, they have a high initial cost and high machining cost, and poor wear resistance. Therefore, both factors should be considered in order to reduce the cost and improve the wear resistance of titanium alloy parts. Powder metallurgy (PM) has been taken into account for lowering the their costs. Titanium alloys reinforced with ceramic particle improves their wear resistance and hardness. In this study, we focus on the microstructures, mechanical properties, and wear resistance of TiC or B4C reinforced Ti-6Al-4V composites by using spark plasma sintering. The volume fraction of the reinforcement from 0 to 19.9 vol. %. The tensile strength of TiC/ and B4C/Ti-6Al-4V had 1058MPa (14.9 vol. % TiC) and 1095MPa (1.7 vol. % B4C), respectively. Vickers harnesses of TiC/ and B4C/Ti-6Al-4V increased with increase in the volume fraction of the reinforcement. The wear resistance of B4C/Ti-6Al-4V exhibited superior to that of TiC/Ti-6Al-4V.