Effects of Thermal Simulation Processing Parameters on Second-phase Particle Precipitation for Hot Rolled Dual-phase Steel
Effects of reduction on the second-phase particle precipitation of the hot rolled dual-phase Nb and Ti-bearing steel were studied on MMS-200.It is found that the dual-phase steel displays clearly classic dual phase morphology which is ferrite and martensite by the observation of micro-structures.The grain sizes are smaller;the size of the second-phase particles is clear smaller and the quantity of the precipitated second-phase particles are increased and dis persed with the decrease of its dimensions.The size of larger particles is square and they contain higher Nb and lower Ti.