Abstract
A tungsten carbide particles reinforced steel matrix composite was fabricated by spark plasma sintering(SPS) technique, and then the composite was remelted in a vacuum tube furnace. The effect of remelting temperature on interface reaction was investigated meticulously. The results show that the interface reaction could occur when the matrix was still in solid state, the thickness of interface reaction layer increased with the increasing temperature. The interface reaction product, Fe3W3C, was resulted from the following two step reactions: firstly the reaction 2WC→W2C+C would occur within tungsten carbide particles at 1314℃, then the W2C would react with Fe to produce Fe3W3C at temperatures above1341℃.
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