International Journal of Materials Engineering and Technology
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Abstract: Titanium- and vanadium-carbide reinforced iron base composite
was produced by a novel process which combines in situ synthesis with powder
metallurgy technique using Ti, Fe, FeV and carbon powder. The microstructure of
the titanium- and vanadium-carbide reinforced iron base composite
was studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD);
with the help of differential thermal analysis (DTA), the reaction mechanism of
the Fe-Ti-V-C system was discussed. The results show that the production of an
iron matrix composite reinforced by titanium- and vanadium-carbide
particulates using the novel process is feasible. Titanium- and
vanadium-carbide particles exhibit homogeneous
distribution in the pearlite. The reaction mechanism is as follows: first,
allotropic change and the reaction at
765.7°C; second, formation of the compound at 1058.5°C because of the eutectic reaction between Ti and
Fe; third, reaction between carbon and melted causing formation of TiC at 1140.4°C; finally, formation of due to the solubility between TiC and VC.
Keywords and phrases: powder metallurgy, titanium- and vanadium-carbide, iron base composite, microstructure, reaction mechanism.
