Abstract：In order to study the effect of Cr,Mn and annealing temperature on the properties of high-strength non-oriented silicon steel,the microstructure and properties of three groups of non-oriented silicon steel with different Cr,Mn content under different manufacturing processes were analyzed by means of OM,SEM,EBSD and universal tensile tester. The results show that the structure of experimental steel is not uniform after hot rolling,and the core is distributed in fibrous structure along the rolling direction,and there are a small amount of receystallization grains at the edge. Normalized treatment can significantly improve the structure uniformity of hot rolled plate,promote recrystallization and eliminate the fibrous structure at the center of hot rolled plate. Polygonal Ferrite grains were obtained by cold rolling and annealing at 930 and 960 ℃. The grain size of the three groups of experimental steel annealed at 960 ℃ was larger,but the favorable {100} texture volume percent decreased and the unfavorable {111} texture volume percent increased. The steel with composition of 0.2Mn-1Cr and annealing at 960℃ has the largest iron loss and less magnetic inductance. After annealing at 930 ℃,the magnetic properties and strength of the steel of 0.5Mn-1Cr are the best:P1.5/50 is 2.41 W/kg,P1.0/ 400 is 17.36 W/kg,B5 000is 1.638 T,tensile strength is 685 MPa.
李兆振, 宋新莉, 刘静, 程朝阳, 毕云杰, 贾涓. 铬、锰及退火温度对无取向硅钢组织性能影响[J]. 钢铁, 2020, 55(5): 80-86.
LI Zhao-zhen, SONG Xin-li, LIU Jing, CHENG Zhao-yang, BI Yun-jie, JIA Juan. Effect of Cr,Mn and annealing temperature on properties of non-oriented silicon steel. Iron and Steel, 2020, 55(5): 80-86.
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2020, Vol. 55 
