Influence of Silicon On the Recovery and Recrystallization of the Cold-Drawn Si-Mn Dual-Phase Steels

The influence of silicon on the proceedings of the recovery and recrystallization of the cold-drawn Si-Mn dual-phase steels was researched by means of SEM, TEM and HV-hardness. Experimental results show. (1) The proceedings of the recovery and recrystallization of experimental steels appeal firstly in the original ferrite phase of the dual-phase structure, and it is discovered that the formation of a recrystallized grain through the growth of subgrain boundary or subgrain coalescence, and in the ferrite field the recrystallized α-grain size is larger than the recrystallized α-grain size in the marlensi te field. (2) The proceedings of the recovery and recrystallization were delayed obviously increasing silicon content of steel. (3) The recovery activation energy and recrystallization activation energy were calculated respectively.