This paper is concerned with the microstructural characterization and compressive behavior of partially remelted 2024 alloys reinforced with 10% and 20% SiC particle. The composites were fabricated by the powder metallurgy technique and subsequently extruded at high temperature with an extrusion ratio of 16:1. Specimens obtained from the extruded bars were therefore deformed in uniaxial compression in the semi-solid state at different constant strain rates ranging from 0.012 s-1 to 0.060 s-1. The influence of SiC particle volume fraction

remelted temperature and strain rates on the compressive behavior of SiCp/2024 composites were investigated. A reheological analysis shows that the partially remelted composites behave as non-newtonian fluids

following Norton-Hoff law of the type with m in the range 0.2- 0.45. The compressive stress of composites decreases strongly with increasing the remelted temperature and increases with increasing the SiC particle volume fraction. The strain rate sensitivity m is independent of particle volume fraction.