1. School of Materials Science and Engineering, Anhui University of Technology, Ma′anshan 243002, Anhui, China; 2. Department of Materials Science and Engineering, McMaster University, Hamilton L8S 4A7, Ontario, Canada
Abstract:
To promote effectively dynamic recrystallization and obtain a homogeneous distribution of ultrafine grain size in strip finish rolling process, the behavior of static and dynamic recrystallization must be appropriately designed to provide an ultrafine austenite microstructure without mixed grain size. The design of rolling schedule was analyzed based on the control of the recrystallization behavior to achieve ultrafine grain size in the strip rolling process of niobium microalloyed steel. The experimental simulations were presented to validate the twice dynamic recrystallization design to achieve ultrafine grain size control.