Effect of Finishing Temperature on Microstructure of Hot Rolled Dual-phase Steel

The effect of the finishing temperature on the microstructure of hot rolled dual-phase steel was studied by means of OM,TEM at laboratory rolling mill.The microstructure of fiber mixed dual-phase could be obtained.The results show microstructure was refined and the degree of under-cooling increased,nucleation driving force was improved,nucleation rate increased with the decreasing of the finishing temperature.