Abstract
A 1.2 wt% Si non-oriented electrical steel (NOES) was processed using conventional rolling-annealing routes. The hot-rolled steel was annealed at various temperatures from 850 to 1000 °C for 4 h and cold rolled to a thickness of 0.5 mm. The steel was final annealed at temperatures varying from 700 to 850 °C for 24 h. The textures and magnetic properties of the steel sheets were characterized by electron backscatter diffraction (EBSD) and Epstein frame techniques, respectively. It was found that hot band annealing at 850 °C for 4 h followed by final annealing at 800 °C for 24 h resulted in the lowest core loss (60 Hz, 1.5 T) of 3.59 W/kg, which is 26% lower than the core loss obtained without hot band annealing (final annealing at 700 °C). Correlations among the magnetic properties, grain size, and texture factor were evaluated for all the annealing conditions to discuss the effect of the annealing conditions on the magnetic properties.
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Acknowledgements
Funding for this research was provided by Stelco Inc., Mitacs, and the Office of Energy Research and Development, Natural Resources Canada. The authors are grateful to Peter Newcombe, Doug McFarlan, Howard Webster, and David Saleh for casting the steel, and to Michael Attard for rolling and annealing the steel. Jian Li and Renata Zavadil are gratefully acknowledged for their assistance in EBSD measurements.
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He, Y., Mehdi, M., Zhou, T., Cathcart, C., Badgley, P., Edrisy, A. (2022). Effect of Hot Band Annealing and Final Annealing Temperatures on the Texture, Grain Size, and Magnetic Properties of 1.2 wt% Si Non-oriented Electrical Steel. In: TMS 2022 151st Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-92381-5_36
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DOI: https://doi.org/10.1007/978-3-030-92381-5_36
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