Evolution of microstructure and texture for Hi-B steel using low-temperature slab heating

Liu Lei; Guo Feihu; Shi Pengzhao; Qiao Jialong; Tian Yushi; Qiu Shengtao

doi:10.7513/j.issn.1004-7638.2023.01.027

Volume 44 Issue 1

Feb. 2023

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Liu Lei, Guo Feihu, Shi Pengzhao, Qiao Jialong, Tian Yushi, Qiu Shengtao. Evolution of microstructure and texture for Hi-B steel using low-temperature slab heating[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 175-180. doi: 10.7513/j.issn.1004-7638.2023.01.027

Citation:

Liu Lei, Guo Feihu, Shi Pengzhao, Qiao Jialong, Tian Yushi, Qiu Shengtao. Evolution of microstructure and texture for Hi-B steel using low-temperature slab heating[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 175-180. doi: 10.7513/j.issn.1004-7638.2023.01.027

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Evolution of microstructure and texture for Hi-B steel using low-temperature slab heating

doi: 10.7513/j.issn.1004-7638.2023.01.027

1.
Engineering and Research Center for Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081, China
2.
College of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China

Received Date: 2022-03-21
Publish Date: 2023-02-28

Abstract

Abstract

The evolutions of microstructure and texture for Hi-B steel using low-temperature slab heating technology were studied by optical microscope and X-ray diffractometer. The results show that the distribution of microstructure and texture is not uniform from the surface to the center layer in the hot-rolled band and annealed hot-rolled band. The microstructure of the hot-rolled band consists of the surface recrystallized region, the mixed region of recrystallized and deformed grains, and the central deformed grain region. Moreover, the texture types of each layer in the hot-rolled band are different. The grains in the surface layer of the annealed hot-rolled band grow, the deformed grains in the transition layer and the center layer disappear, and the annealed hot-rolled band inherits the texture characteristics of the hot-rolled band. In addition, the cold-rolled band has a fibrous deformed structure. An α texture dominated by {001}<110>~{111}<110> is formed during cold-rolling. The average grain size of the transverse section and vertical section of the decarburized and nitrided sheet is 25.9 μm and 25.3 μm, respectively, and the textures are mainly {111}<112>, {114}<481> and {001}<120> textures. The average grain size of the final product is 19.1 μm, and the final product has a single Gaussian texture.
- high permeability grain oriented silicon steel,
- Hi-B steel,
- slab,
- heating at low temperature,
- microstructure,
- texture

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References(11)

References

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