用熔铸工艺过程中的原位反应合成方法制备了TiCP 颗粒增强 3Cr1 3钢基复合材料。试验结果表明 ,该工艺制备的复合材料工艺性能优良 ,易于加工成形。当TiCP 颗粒的体积分数小于 8%时 ,显微组织中TiCP 颗粒分布均匀 ,没有出现颗粒的团聚及由于TiCP 颗粒引入而形成的组织缺陷。TiCP 颗粒的加入能有效地提高材料的常温及高温强度 ,但在一定程度上降低了材料的塑性和冲击韧性 TiCP particles reinforced 3Cr13 steel matrix composites were prepared by in-situ reaction synthesis during the casting process. The test results show that the composite prepared by the process has excellent process performance and is easy to process and shape. When the volume fraction of TiCP particles is less than 8%, the TiCP particles distribute homogeneously in the microstructure without the agglomeration of particles and the defects of the microstructure due to the introduction of TiCP particles. TiCP particles can effectively increase the room temperature and high temperature strength of the material, but to a certain extent, reduce the plasticity and impact toughness