Role of Hot Rolling in Microstructure and Texture Development of Strip Cast Non-Oriented Electrical Steel

Author:

Jiao HaitaoORCID,Xie Xinxiang,Hu Xinyi,Zhao Longzhi,Misra Raja Devesh Kuma,Liu Dejia,Tang YanchuanORCID,Hu Yong

Abstract

In this study, the effect of the hot-cold rolling process on the evolution of the microstructure, texture and magnetic properties of strip-cast non-oriented electrical steel was investigated by introducing hot rolling with different reductions. The results indicate that hot rolling with an appropriate reduction, such as the 20% used in this study, increases the shear bands and {100} deformed microstructure in the cold roll sheet. As a result, in our study, enhanced η and Cube recrystallization texture and the improved magnetic induction were obtained. However, hot rolling with excessive reduction (36–52%) decreased the shear bands and increased the α-oriented deformation microstructure with low stored energy. It enhanced the α recrystallization texture and weakened the η texture, resulting in a decrease in the magnetic induction. In addition, hot rolling promoted the precipitation of supersaturated solid solution elements in the as-cast strip, thereby affecting the subsequent microstructure evolution and the optimization of its magnetic properties.

Funder

Open Project of Key Laboratory of Conveyance (Equipment East China Jiaotong University), Ministry of Education

National Natural Science Foundation of China

Natural Science Foundation of Jiangxi Province

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

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