A M7C3 (M = Cr, Fe) phase is formed in Cr3C2/Ni3Al composites prepared by hot isostatic pressing. The hardness of the Cr3C2/Ni3Al composites increases with increasing addition of Cr3C2. The wear resistance of Cr3C2/Ni3Al composites is improved due to the Cr3C2 asperities keep the sliding surfaces apart. Excess addition of Cr3C2 (such as 24 vol%) can decrease the wear resistance of Cr3C2/Ni3Al composites.