Effect of Si content on hot deformation behavior and dynamic recrystallization of high-silicon electrical steel

 High-silicon electrical steel is an excellent soft magnetic material with high permeability,low coercive force,and nearzero magnetostriction coefficient. Compared with other preparation methods of high-silicon electrical steel sheet,the rolling method has the advantages of short process and high efficiency. Among the rolling methods,hot rolling is one of the most important part in the formation of high-silicon electrical steel sheet. Therefore,it is very important to study the hot deformation and dynamic recrystallization behaviors of high-silicon electrical steels. In this study,hot deformation and dynamic recrystallization behaviors of Fe-( 5. 5%,6. 0%,6. 5%) Si high-silicon electrical steel were studied using a Gleeble-3800 D thermal-mechanical simulator with a deformation temperature of 750-1050 ℃ and strain rate of 0. 01-1 s-1. The constitutive equations of Fe-( 5. 5%,6. 0%,6. 5%) Si high-silicon electrical steels were established by linear regression analysis. …