The effect of copper precipitates on the recrystallization textures and magnetic properties of non-oriented electrical steels

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[1] Bian, Xiaohui
[2] Zeng, Yanping
[3] Nan, Di
[4] Wu, Meng
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Zeng, Y. (zengyanping@mater.ustb.edu.cn) | 1600年 / Elsevier Ltd卷 / 588期
关键词：
Small quantities of copper were added to non-oriented electrical steels to produce a metastable Cu-rich phase with a different structure from a twinned 9R or 3R and an average size on the order of 20 nm. These precipitates were observed in hot-rolled bands coiled at 650 C for between 1 and 3 h. The coiling time and copper content have little effect on the average size of the precipitates; but the amount of the precipitates increases significantly with the Cu content; and the particles appear to coalesce when the copper level rises to 0.35%. The influence of the precipitates on the recrystallization textures and magnetic properties of non-oriented electrical steels was investigated; and it can be concluded that the Cu-rich precipitates can improve the recrystallization textures of soft magnetic materials by inhibiting the {1 1 1} texture component and promoting the Goss component. However; this beneficial effect is weakened when the Cu-rich particles coalesce or the coiling time is extended. Furthermore; the Cu-rich precipitates can significantly reduce the core loss of non-oriented electrical steels by improving the recrystallization textures without obviously decreasing the magnetic induction. © 2013 Elsevier B.V. All rights reserved;
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