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中文摘要：
利用激光原位合成工艺制备了TiC＋TiB增强的钛基复合材料，初步研究了原位合成反应的热力学以及激光原位合成钛基复合材料的工艺、组织及性能。结果表明：钛与B4C反应释放出大量热，反应能自发维持；存在两种不同形状的增强体，即短纤维状TiB和等轴、近似等轴状TiC粒子；该钛基复合材料局部显微硬度达到500HV。
英文摘要：
A Ti matrix composite material with TiC and TiB reinforced particles is produced by laser direct deposition process. During preparation, the Ti powders and B4 C powders are fed into laser molten pool simultaneously. Results show that the TiC and TiB reinforced particles are short fiber and equiaxed or near-equiaxed in shape respectively, these particles are synthesized owing to the chemical reaction between Ti and B4 C. The thermodynamics calculation indicates that the chemical reaction between Ti and B4 C releases much heat and the reaction process can keep on spontaneously. Results also show that the local micro-hardness of Ti matrix composite material is up to 500HV.
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