Secondary Recrystallization Behaviors of Grain-Oriented 6.5 wt% Silicon Steel Sheets Produced by Rolling and Nitriding Processes

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• 作者：Jing Qin ; Ping Yang ; Wei-Min Mao ; Feng Ye…
• 关键词：Grain ; oriented 6.5 wt% silicon steel ; Secondary recrystallization ; Rolling ; Nitriding ; Inhibitor
• 刊名：Acta Metallurgica Sinica (English Letters)
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：29
• 期：4
• 页码：344-352
• 全文大小：4,598 KB
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• 作者单位：Jing Qin (1)
  Ping Yang (1)
  Wei-Min Mao (1) (2)
  Feng Ye (2)
  Li Liu (2)
  
  1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
  2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China
  
• 刊物主题：Metallic Materials; Spectroscopy/Spectrometry; Organometallic Chemistry; Tribology, Corrosion and Coatings; Nanotechnology; Characterization and Evaluation of Materials;
• 出版者：Springer Berlin Heidelberg
• ISSN：2194-1289

文摘

By rolling and nitriding processes, 0.23- to 0.3-mm-thick grain-oriented 6.5 wt% silicon steel sheets were produced. The core losses of grain-oriented 6.5 wt% silicon steel at frequencies ranging from 400 Hz to 20 kHz were lower than that of the grain-oriented 3 wt% silicon steel with the same thickness by 16.6–35.8%. The secondary recrystallization behavior was investigated by scanning electron microscopy, energy-dispersive spectroscopy, and electron backscattered diffraction. The results show that the secondary recrystallization in high-silicon steel sheets develops more completely as the nitrogen content increases after nitriding, secondary recrystallized grain sizes become larger, and the sharpness of Goss texture increases. Because more \(\left\{ {110} \right\}\left\langle {116} \right\rangle\) grains in the subsurface and the central layer of the sheets have a lot of 20°–45° high-energy boundaries in addition to Goss grains, \(\left\{ {110} \right\}\left\langle {116} \right\rangle\) can be the main component through selective growth during secondary recrystallization when the inhibitor quantity is not enough and inhibitor intensity is weaker. The increases in nitrogen content can increase the inhibitor intensity and hinder abnormal growth of a mount of \(\left\{ {110} \right\}\left\langle {116} \right\rangle\) grains and therefore enhance the sharpness of Goss texture.