Evolution of microstructure and macrotexture of 3.1%Si oriented silicon steel

doi:10.13251/j.issn.0254-6051.2023.09.040

Abstract

Abstract: Microstructure and macroscopic textures of 3.1%Si oriented silicon steel during first cold rolling, decarburizing annealing, second cold rolling, high temperature annealing and tensile leveling annealing were analyzed by means of Zeiss microscope, X-ray diffractometer and other testing instruments. The results show that microstructure of the oriented silicon steel is ferrite. The average grain size is 10.23 μm after first recrystallization during decarburizing annealing, and reaches 2.0 cm after second recrystallization during high temperature annealing, and grows to 2.3 cm with increasing of uniformity after tensile leveling annealing. The main texture type of the oriented silicon steel after decarburization annealing is γ fiber texture, with a small amount of Goss texture {110}<001>. After high temperature annealing, the texture type is mainly Goss texture {110}<001>. After tensile leveling annealing, the Goss texture reaches the strongest and sharpest degree.

Key words: oriented silicon steel, microstructure, texture, decarburizing annealing, high temperature annealing

CLC Number:

TG142

Liu Yongzhen, Dong Lili, Liu Baozhi, Zhang Hao, Ma Yonglin. Evolution of microstructure and macrotexture of 3.1%Si oriented silicon steel[J]. Heat Treatment of Metals, 2023, 48(9): 238-241.

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