采用原位复合工艺制备了自生TiCP/LD7复合材料坯料，经热挤压成φ12的棒材，并进行了T6热处理。通过SEM观察和分析了热挤压TiCP/LD7复合材料的显微组织和断口形貌。测试了材料的σb，σs，E和δ。结果表明：TiC颗粒含量为20wt%的复合材料的σb，σs，E分别为417MPa，373MPa，92GPa，δ为4.5%，断裂形式为韧性断裂。
The in-situ TiCP/LD7 composites were prepared by reactionsynthesize technique, and it was the stick of φ12 mm by thermal extrusion. The ultimate ten sile strength (σb，σs), elastic modules(E) and elongation(δ) of the in-situ TiCP/LD7 composites was tested at the heat treatment condition of T6. The microstru cture of the in-situ extruded TiCP/LD7 composites was observed by the use of SEM , and the fracture morphology was also observed. The results show that the ultim ate tensile strength and the elastic modules of the in-situ TiCP/LD7 composite with 20wt%TiCP are 417MPa，373MPa and 92GPa respectively, and the elongation is up to 4.5%, the fracture is ductile.
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