Effect of normalization on texture evolution of 0.2-mm-thick thingauge non-oriented electrical steels with strong g-fiber textures
Jing Qin1, De-fu Liu1, Ye Yue1, Hong-jin Zhao1, Chao-bin Lai2
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
Effect of normalization on texture evolution of 0.2-mm-thick thingauge non-oriented electrical steels with strong g-fiber textures
Jing Qin1, De-fu Liu1, Ye Yue1, Hong-jin Zhao1, Chao-bin Lai2
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
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 g-fiber recrystallization texture in the final sheet. Coarse c-fiber-oriented grains after intermediate annealing and medium cold-rolling reduction were considered key factors to obtain a strong g-fiber texture given that a large number of shear bands within the c-fiber deformed matrix provided dominant nucleation sites for g-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.
Abstract: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 g-fiber recrystallization texture in the final sheet. Coarse c-fiber-oriented grains after intermediate annealing and medium cold-rolling reduction were considered key factors to obtain a strong g-fiber texture given that a large number of shear bands within the c-fiber deformed matrix provided dominant nucleation sites for g-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.
Jing Qin,De-fu Liu,Ye Yue, et al. Effect of normalization on texture evolution of 0.2-mm-thick thingauge non-oriented electrical steels with strong g-fiber textures[J]. Journal of Iron and Steel Research International, 2019, 26(11): 1219-1227.