A process for the production of MMCs, based on the infiltration by a low melting temperature eutectic alloy of porous preforms containing a mixture of reinforcing ceramic particles and pure metal powder is described.. The infiltration is done at temperatures higher than the eutectic temperature, but below the fusion temperature of the pure metal. After infiltration with the tow melting temperature liquid, a diffusional solidification process occurs, where the solidification is controlled by the partition of the alleging elements between the solid and the melt. Preforms prepared with mixtures of Al powders and SiCp, were cold pressed to different pressures so as to obtain from 25% to 10% volume fractions of pores, The compression curves obtained are described. Infiltration experiments using eutectic AI-Cu alloys (33%weight Cu) and Zamak 5 (Zn-4% Al-1%Cu) were run on the preforms, varying the infiltration pressure and the cooling rate after infiltration. Infiltrated samples were microstructurally characterized by optical and scanning electron microscopy. The final structures showed that the IDS concept is feasible, producing MMC＇s with homogeneous matrixes and regular distributions of SiCp.