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材料工程  2018, Vol. 46 Issue (1): 16-24    DOI: 10.11868/j.issn.1001-4381.2016.000178
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
初次再结晶组织和渗氮量对低温渗氮取向硅钢二次再结晶行为的影响
刘恭涛, 刘志桥, 杨平, 毛卫民
北京科技大学 材料科学与工程学院, 北京 100083
Effect of Primary Recrystallized Microstructure and Nitriding on Secondary Recrystallization in Grain Oriented Silicon Steel by Low Temperature Slab Reheating
LIU Gong-tao, LIU Zhi-qiao, YANG Ping, MAO Wei-min
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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摘要 通过控制初次再结晶工艺获得尺寸不同的低温渗氮取向硅钢初次再结晶组织,研究初次晶粒尺寸对二次再结晶行为和磁性能的影响,探索初次晶粒尺寸过大条件下合适的渗氮量,并分析初次再结晶组织中{411}〈148〉织构对二次再结晶行为的影响。结果表明:随着初次晶粒尺寸由10μm升高至15μm,二次再结晶温度升高,Goss织构更加锋锐,成品磁性能提高,当初次晶粒尺寸为28μm时,合适的渗氮量约为6×10-4。初次再结晶组织中{411}〈148〉取向晶粒生长能力更强,极易粗化,阻碍二次晶粒的异常长大,同时{411}〈148〉与黄铜晶粒之间为大于45°的低迁移率晶界,对黄铜晶粒异常长大的阻碍作用更为显著。
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刘恭涛
刘志桥
杨平
毛卫民
关键词 渗氮织构二次再结晶取向硅钢    
Abstract:Different primary recrystallized grain sizes were obtained by controlling decarburization process in grain oriented silicon steel produced by low temperature slab reheating technique. The effect of primary grain size on secondary recrystallization and magnetic properties was studied. The appropriate nitrogen content after nitriding was explored in case of very large primary grain size, and the effect of {411}〈148〉 primary recrystallized texture on the abnormal growth behavior was discussed. The results show that an increase in average primary grain size from 10μm to 15μm leads to an increase of secondary recrystallization temperature and a sharper Goss texture with higher magnetic permeability, in the condition of a very large average primary grain size of 28μm, the suitable amount of nitrogen increases to about 6×10-4. The {411}〈148〉 oriented grains in primary recrystallized microstructure can easily grow into larger sizes due to their size advantage, and thus hinder the abnormal growth of secondary grains, moreover, the hindering effect is more pronounced in the abnormal growth of Brass-oriented grains due to their misorientation with low migration rate other than Goss grains.
Key wordsnitriding    texture    secondary recrystallization    grain oriented silicon steel
收稿日期: 2016-02-22      出版日期: 2018-01-18
中图分类号:  TG142.77  
通讯作者: 杨平(1959-),男,教授,博士生导师,从事软磁材料及微织构方面的研究,联系地址:北京市海淀区学院路30号北京科技大学材料科学与工程学院(100083),E-mail:yangp@mater.ustb.edu.cn     E-mail: yangp@mater.ustb.edu.cn
引用本文:   
刘恭涛, 刘志桥, 杨平, 毛卫民. 初次再结晶组织和渗氮量对低温渗氮取向硅钢二次再结晶行为的影响[J]. 材料工程, 2018, 46(1): 16-24.
LIU Gong-tao, LIU Zhi-qiao, YANG Ping, MAO Wei-min. Effect of Primary Recrystallized Microstructure and Nitriding on Secondary Recrystallization in Grain Oriented Silicon Steel by Low Temperature Slab Reheating. Journal of Materials Engineering, 2018, 46(1): 16-24.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000178      或      http://jme.biam.ac.cn/CN/Y2018/V46/I1/16
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