In situ hybrid-reinforced Ti555 titanium matrix composites (TMCs) (TiB + TiC + Ti₅Si₃) were prepared by low-energy ball milling and discharge plasma sintering using Ti555 titanium alloy powder and B₄C_p, SiC_p, and CNT as the raw materials, and then solution and aging treatment were performed. The effects of the content and type of reactants on the microstructure, microhardness of phase composition, and high-temperature oxidation behavior of the composites were investigated under the addition of different contents of B₄C_p and addition of SiC_p or CNT. A hardness test shows that the hardness of the composite with a volume fraction of 3.5%B₄C_p+1.5%CNT (1243.36 HV) is more than twice that of the matrix (539.21 HV). An XRD analysis shows that the oxidation phase is mainly composed of TiO₂, Al₂O₃, and SiO₂. Scanning electron microscopy (SEM) showed that the oxide layer (32 μm) was denser than the matrix (56 μm) in the composite with a volume fraction of 3.5%B₄C_p+ 1.5%SiC_p at 800 °C for 100 h. The results show that the addition of B₄C_p and CNT can effectively improve the hardness of TMCs, and the addition of B₄C_p and SiC_p can effectively improve the high-temperature oxidation resistance of TMCs.

使用Ti555钛合金粉末和B ₄ C _p、SiC _p和CNT ，通过低能球磨和放电等离子体烧结制备原位杂化增强Ti555钛基复合材料（TMCs）（TiB + TiC + Ti ₅ Si ₃）为原料，然后进行固溶和时效处理。研究了不同B ₄ C _p含量和SiC _p含量下反应物含量和类型对复合材料显微组织、显微硬度和高温氧化行为的影响。或碳纳米管。硬度测试表明，体积分数为3.5%B ₄ C _p +1.5%CNT（1243.36 HV）的复合材料的硬度是基体（539.21 HV）的两倍以上。XRD分析表明氧化相主要由TiO ₂、Al ₂ O ₃和SiO _{2 组成}。扫描电子显微镜 (SEM) 表明，在 800 °C 下，体积分数为 3.5%B ₄ C _p + 1.5% SiC _p的复合材料中，氧化层 (32 μm) 比基体 (56 μm) 致密，持续 100 小时. 结果表明，加入B ₄ C _pCNT可有效提高TMCs的硬度，B ₄ C _p和SiC _p的加入可有效提高TMCs的高温抗氧化性。