Effect of recrystallization annealing temperature on microstructure, texture and magnetic properties of non-oriented silicon steel produced by strip casting

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Abstract

A Fe-3.0%Si non-oriented silicon steel was produced by a novel strip casting process. Cold-rolled sheets were annealed at temperatures varying from 900 to 1200 °C with the aim to investigate the influence of recrystallization annealing process on the microstructure, texture and magnetic properties. The increase in annealing temperature significantly increased the recrystallized grain size and reduced the core loss. However, the oversized microstructure (-360 μm) in 1200 °C annealed sheets resulted in an augment in core loss. In addition, with increasing annealing temperature, the magnetic induction diminished along the rolling direction while gradually increased along the transverse direction, even though the average value changed slightly. This interesting result could be attributed to the weakening in η-fiber and strengthening in λ-fiber and γ-fiber texture. The best combination of core loss (3.23 W/kg), magnetic induction (1.71 T) and anisotropy was obtained at recrystallization annealing of 1100 °C. The specified and unspecified errors in this paper have been carefully corrected.

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Jiao, H. T., Qiu, W. Z., Xiong, W., Zhang, Y. X., Fang, F., Cao, G. M., … Xu, Y. B. (2017). Effect of recrystallization annealing temperature on microstructure, texture and magnetic properties of non-oriented silicon steel produced by strip casting. In Procedia Engineering (Vol. 207, pp. 2078–2082). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2017.10.1116

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