Study on VC formation mechanism and the microstructure of Fe-VC composite

Sijing Fu

Abstract


Iron matrix composite reinforced with VC reinforcement was produced through the synthesis reaction from FeV and C. VC formation mechanism was investigated using differential thermal analysis and X-ray diffraction analysis. The results show that FeV firstly decomposes into α-Fe and V, then V reacts with C to generate VC. The microstructure of Fe-VC composite was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), the results indicate that the VC particles are distributed uniformly in the pearlite matrix, and the interface between VC reinforcement and pearlite matrix is clean. The abrasive wear test of Fe-VC composite was investigated with a MM-200 wear-test apparatus. The results show that as the load increases, the wear surface of Fe-VC composite is changed from the intermittent shallow grooves to long continuous deep grooves.


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Revista de la Facultad de Ingeniería,

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