|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||The Role of Temper Rolling and Annealing on the Magnetic Property Improvement of a Low Si Non-oriented Electrical Steel
||Youliang He, Tihe Zhou, Haden Lee, Chad Cathcart, Peter Badgley
|On-Site Speaker (Planned)
Temper rolling and the following annealing have a considerable effect on the magnetic properties of electrical steel. In this study, a low Si non-oriented electrical steel was hot rolled, cold rolled and batch annealed to produce 0.5-mm-thick sheets. Temper rolling (5~8% reduction) was then applied to the annealed sheets which were annealed again at different temperatures (500 to 900 °C) for a fixed annealing time (2 h) or at a fixed temperature (800 °C) for different times (0.5 - 24 h). It was found that temper rolling and annealing could significantly improve the magnetic properties, i.e., decreasing the core loss by up to ~22% and increasing the relative permeability by up to 68% at 1.5 T and 60 Hz, as compared to that without temper rolling. The improvement of magnetic properties was correlated to the changes in microstructure and texture induced during the temper rolling and final annealing processes.