Effect of normalization on texture evolution of 0.2-mm-thick thingauge non-oriented electrical steels with strong η-fiber textures  

作　　者：Jing Qin De-fu Liu Ye Yue Hong-jin Zhao Chao-bin Lai 

机构地区：[1]School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China [2]School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China

出　　处：《Journal of Iron and Steel Research International》2019年第11期1219-1227,共9页

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.5170413151464011,and 51664021);the Natural Science Foundation of Jiangxi Province,China(No.20171ACB20020);the Doctor Start-up Foundation at Jiangxi University of Science and Technology(No.jxxjbs 16005).

摘　　要：Thin-gauge non-oriented electrical steel sheets of 0.2 mm in thickness with high magnetic induction and low core loss were produced by a two-stage cold-rolling method with and without normalization annealing.The through-process texture evolutions of the two processes were compared and studied by means of X-ray diffractometer and electron backscattered diffraction.Results showed that excellent magnetic properties were attributed to strong η-fiber recrystallization texture in the final sheet.Coarse γ-fiber-oriented grains after intermediate annealing and medium cold-rolling reduction were considered key factors to obtain a strong γ-fiber texture given that a large number of shear bands within the γ-fiber deformed matrix provided dominant nucleation sites for η-fiber-oriented grains.The normalization annealing after hot rolling was favorable for the retention of cube texture,thereby decreasing the magnetic anisotropy of thin-gauge non-oriented electrical steels.

关 键 词：Thin-gauge non-oriented electrical steel Two-stage cold-rolling method Microstructure Texture evolution Magnetic property 

分 类 号：TG1[金属学及工艺—金属学]