Intermetallic matrix composites, WC-FeAl and WC Ni3Al, based on 40 vol% intermetallic binder, were prepared from ultrafine precursor powders and processed by liquid phase sintering. Intermetallic binders, Fe60Al40-500ppm B, Ni3Al-500ppm B and Ni3Al were prepared in ultrafine form by controlled atmosphere ring grinding, blended with submicron WC powder and then uniaxially hot pressed under constant load at 1450, 1500 and 1550 degreesC. The composites exhibited near full density at the highest sintering temperature. It was found that composites containing Ni3Al-based binder had the same or lower than those composites which contained FeAl-based binder but Ni3Al based composites exhibited higher toughness. It seems that the higher hardnesses in FeAl-based composites could be associated with the higher hardness of the binder phase. The addition of 500 ppm B to Ni3Al was found to significantly inhibit WC grain growth after uniaxial hot pressing but the precise mechanism of this effect is yet to be investigated.