Hot rolled and normalized microstructure and texture of high strength non-oriented electrical steel at different finish rolling temperatures

doi:10.13251/j.issn.0254-6051.2024.05.025

Abstract

Abstract: Microstructure and texture of the high strength non-oriented electrical steel hot rolled at different finish rolling temperatures and normalized were studied by means of optical microscope (OM) and electron backscattering diffraction analysis (EBSD). The results show that the higher the finish rolling temperature of the hot rolled plate, the stronger the tendency of grain aggregation and growth, the stronger the dynamic recrystallization ability, the coarser the grains. When the finish rolling temperature is low, the deformation stored energy generated during hot rolling process is released during normalization process, and the recrystallization ability is stronger. Along the thickness direction, the surface texture of the hot rolled plate is mainly Goss texture ({110}<001>), and the center layer is mainly rotating cubic texture ({001}<110>). The texture of the normalized plate corresponds to that of the hot rolled plate, and with the increase of finish rolling temperature, the proportion of favorable texture raises.

Key words: finish rolling temperature, non-oriented electrical steel, microstructure, texture

CLC Number:

TG142.1

Qiao Pengfei, Wu Zhongwang, Zhang Huimin, Jin Zili, Ren Huiping, Guo Huan. Hot rolled and normalized microstructure and texture of high strength non-oriented electrical steel at different finish rolling temperatures[J]. Heat Treatment of Metals, 2024, 49(5): 153-157.

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