Effect of annealing parameter on microstrucmre and magnetic properties of cold rolled non-oriented electrical steel

The microstructure and magnetic properties of cold rolled non-oriented electrical steel, annealed at 200-1 000℃ for 0-240 min with different heating rates, were investigated by optical microscopy, scanning electron microscopy, Epstein frame, and transmission electron microscopy. The results show tha...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2007, Vol.17 (A01), p.74-78
Main Author: 李敏 肖于德 王伟 周娟 吴光亮 彭跃明
Format: Article
Language:English
Subjects:
磁性特征
退火技术
金属材料
铁心硅钢
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Summary:The microstructure and magnetic properties of cold rolled non-oriented electrical steel, annealed at 200-1 000℃ for 0-240 min with different heating rates, were investigated by optical microscopy, scanning electron microscopy, Epstein frame, and transmission electron microscopy. The results show that the magnetic properties of cold rolled non-oriented electrical steel can be improved by controlling the annealing process to obtain uniform coarse grains with critical sizes after the recovery, recrystallization and growth of grains. Additionally, the annealing temperature influences the magnetic properties more significantly than annealing time, and with the increase of heating-up rate during the annealing process, the magnetic properties of the cold rolled non-oriented electrical steel increase.
ISSN:1003-6326