Effects of temper rolling rate on the microstructure, texture and magnetic properties of Fe-6.5%Si thin strip
LUO Zhong-han1, WANG Ru-wu1,2, ZENG Chun1, LIU Zhen-yu3, ZHANG Feng-quan1
1. National Engineering Research Center for Silicon Steel, Wuhan 430080, Hubei ,China 2. Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan 430081, Hubei ,China 3. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning,China
Abstract：A Fe-6.5%Si steel thin strip with a final thickness of 0.50 mm was produced by twin-roll continuous casting-warm rolling-intermediate annealing-temper rolling-final annealing process. The effects of temper rolling rate on microstructure, texture and magnetic properties of the annealing strips were investigated with optical microscopy, X-ray diffraction and magnetic measurement. The results show that the average grain size of the annealing strips decreases gradually with increasing temper rolling rate, and the size difference between the grains decreases. When the temper rolling rate is larger than 12%, the surface texture of the annealing strips is λ texture and the obvious γ texture appears in the middle of the strips, its intensity increases with decreasing temper rolling rate. When the temper rolling rate is lower than 12%, the distribution of texture is dispersed. The magnetic induction of the annealing strips decreases firstly and then increases with increasing temper rolling rate. With the increase of temper rolling rate, the low-frequency iron loss decreases rapidly first and then increases slowly. The high-frequency iron loss decreases gradually with increasing temper rolling rate. The research work was useful to develop electrical steel by twin roll continuous casting process.
骆忠汉，汪汝武 ，曾春，刘振宇，张凤泉. 平整轧制量对6.5%Si硅钢薄带组织和织构及磁性能的影响[J]. , 2015, 22(1): 6-10.
LUO Zhong-han, WANG Ru-wu,, ZENG Chun, LIU Zhen-yu, ZHANG Feng-quan. Effects of temper rolling rate on the microstructure, texture and magnetic properties of Fe-6.5%Si thin strip. , 2015, 22(1): 6-10.
Hong-Yu Song, Hai-Tao Liu, Hui-Hu Lu, Hao-Ze Li, Wen-Qiang Liu, Xiao-Ming Zhang, Guo-Dong Wang.Effect of hot rolling reduction on microstructure, texture and ductility of strip-cast grain-oriented silicon steel with different solidification structures [J].[J]., 2014, 605:260-269
2015, Vol. 22 
