Effect of annealing temperature on microstructure and texture of Ce-bearing non-oriented electrical steel for new energy automobiles

doi:10.13251/j.issn.0254-6051.2021.02.026

Abstract

Abstract: Effect of annealing temperature on microstructure and textures of Ce-bearing non-oriented electrical steel for new energy automobiles was studied by means of SEM, EBSD and XRD. The results show that recrystallized and sub-crystalline microstructure can be observed in both edge and center after annealing at 800 ℃, the intensity of {112}<110> orientation in α texture is highest, but that of {111}<112> orientation in γ texture is weaken. In addition, a small amount of η texture exists in the annealing sheet. After annealing at the range of 830-920 ℃, the higher annealing temperature, the more sufficient recrystallization is, the intensity of α texture decreases while γ texture increases, but η texture totally disappears. The complete recrystallization of tested steel annealed at 950 ℃ has occurred, at which state the average grain size is 48.29 μm and the highest intensity of {111}<112> orientation in γ texture can reach 11.36.

Key words: non-oriented electrical steel, Ce, microstructure, texture, annealing treatment

CLC Number:

TG142.1

Kong Xiangbing, Ren Huiping, Jin Zili, Li Tao, Wu Zhongwang. Effect of annealing temperature on microstructure and texture of Ce-bearing non-oriented electrical steel for new energy automobiles[J]. Heat Treatment of Metals, 2021, 46(2): 149-152.

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