Abstract: In order to investigate the feasibility of self-propagation high-temperature synthesis induced by the wetting and infiltration process of aluminum melt on the pore preform mixed with Ti-C-TiC powder,the effect of the variation of TiC powder content on the wetting and infiltration behavior was investigated,and the mechanism of the wetting and infiltration behavior was discussed from the microstructure. The results show that the pore preforms with the addition of TiC powder content of 0-10wt% can be rapidly wetted and infiltrated by the aluminum melt and it triggers the self-propagating high-temperature synthesis reaction of the powders preforms. The wetting and infiltration behavior of aluminum melt on the surface of the preform has obvious phases,and its wetting and spreading behavior is consistent with the wetting characteristics of heterogeneous surfaces,and Al₃Ti phase and Al phase appear in the experimental products besides TiC. The TiC powders reduce the temperature of the self-propagation reaction,which makes the intensity of the reaction be controlled,but it prolongs the time of aluminum melt wetting and infiltration on the pore preform.