Effect of preset heating rate on combustion synthesis of Fe-Cu-Ti-C system under the action of electric field

By using Gleeble-3500D thermal simulatiou equipment, the effect of preheatinq rate on combustion synthesis of Fe-Cu-Ti-C system unden the action of electrie field was investigated. The phase structure and microstructure of products were analysed by the X-ray diffraction(XRD), scanning electron microscope(SEM) and metallographic microscope. The conversion rate of titanium carbide in Fe-Cu-Ti-C system was calculated basing on the law of conservation of energy. The result shows that the ignition temperature of the system is decreased (from 752°C to 629.78°C) with the preset heating rate improved (from 50°C/s to 100°C/s); The relative density of the products is also enhanced and the size of titanium carbide becomes smaller and the conversion rate of titanium carbide calculated using theoretical method increases with the preset heating rate increasing.