Abstract To enhance wear properties of titanium alloys, in situ titanium matrix composites (TMCs) were synthesized by a melting cast method with (TiC + TiB) volume fractions of 0, 2, 4, 6, 8, and 10%. The results indicated that tribological properties of TMCs were increased owing to the dispersed distribution of (TiC + TiB) reinforcements, which improved the ability to resist the surface shear stress. Moreover, the stable transfer layer formed during wear reduced the shear strength and limited the direct interaction at tribo-pair interfaces to enhance surface hardness and wear resistance effectively. Consequently, the wear mechanism appeared to transitioned from the severe adhesive and oxidative wear gradually to the slight adhesion, abrasive, and oxidative wear along with reinforcements content increased.

中文翻译：

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原位合成(TiB+TiC)/Ti6Al4V(TiB/TiC=1/1)复合材料的显微组织和摩擦学行为

摘要 为了提高钛合金的耐磨性能，采用熔铸法合成了体积分数为 0、2、4、6、8 和 10% 的 (TiC + TiB) 原位钛基复合材料 (TMCs)。结果表明，由于 (TiC + TiB) 增强剂的分散分布，TMCs 的摩擦学性能得到提高，从而提高了抵抗表面剪切应力的能力。此外，磨损过程中形成的稳定转移层降低了剪切强度并限制了摩擦对界面的直接相互作用，从而有效地提高了表面硬度和耐磨性。因此，磨损机制似乎从严重的粘着和氧化磨损逐渐转变为轻微的粘着、磨料和氧化磨损，增强材料含量增加。