Effect of annealing after strip casting on microstructure, precipitates and texture in non-oriented silicon steel produced by twin-roll strip casting

Lan, Meng-Fei; Zhang, Yuanxiang; Fang, Feng; Lu, Xu; Wang, Yang; Yuan, Guo; Cao, Guangming; Misra, R.D.K.; Wang, Guodong

doi:10.1016/j.matchar.2018.06.016

Cited by 19 publications

(3 citation statements)

References 28 publications

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“…An et al [14] identified that increasing the grain size of non-oriented silicon steel before finally cold rolling can promote the formation of shear bands during cold rolling, resulting in the enhancement of λ-fiber texture and the weakening of γ-fiber texture after annealing. Lan et al [15] proposed that thin strips made by twin-roll continuous casting through an annealing-cold rolling-annealing process have a stronger λ-fiber texture and a lower γ-fiber texture than those fabricated by a direct cold rolling-annealing process. Zhang et al [16] and Jiao et al [17] prepared non-oriented silicon steel with the two-stage cold rolling process.…”

Section: Introductionmentioning

confidence: 99%

Evolutions of Cube ({001}<100>) and {115}<161> Orientations in Cold-Rolled Ultra-Thin Non-Oriented Silicon Steel

Tu,

Meng,

Zhang

et al. 2023

Materials

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In this study, the evolutions of Cube and {115}<161> orientations of a cold-rolled ultra-thin non-oriented silicon steel were investigated using a combination of experimental investigation and the crystal plasticity finite element method (CPFEM). The results show that Cube orientations remain relatively stable when their initial deviation angles from the ideal Cube orientation are less than 12°, even after a 60% cold rolling reduction. However, larger deviations occur due to higher strain near grain boundaries. Furthermore, the {115}<161> orientations, with an initial deviation of ~18° from the ideal Cube orientation, become separated into different orientation regions during cold rolling. Some regions gradually approach the ideal Cube orientation as cold rolling progresses and reach ~12.5° deviation from the ideal Cube at a 40% reduction. This study demonstrates good agreement between simulation and experimental results, highlights the micro-deformation mechanisms during rolling, and offers insights for optimizing the ultra-thin strip rolling process.

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Section: Introductionmentioning

confidence: 99%

Evolutions of Cube ({001}<100>) and {115}<161> Orientations in Cold-Rolled Ultra-Thin Non-Oriented Silicon Steel

Tu,

Meng,

Zhang

et al. 2023

Materials

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“…Cheng et al [ 10 ] demonstrated that {100} texture was furthermore obtained in columnar grains by cold-rolling, and was weakened by hot-rolling with high reduction and recrystallization process. However, the as-cast strip (thickness 1.5–3 mm) could be cold-rolled directly without hot-rolling, which promoted the formation of sharp {100} texture [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. As indicated in reference [ 16 ], during annealing the abnormal growth of grains with {100} texture appeared, and intensive Cube texture and good magnetic properties were achieved after cold-rolling.…”

Section: Introductionmentioning

confidence: 99%

Evolution of the Shear Band in Cold-Rolling of Strip-Cast Fe-1.3% Si Non-Oriented Silicon Steel

et al. 2021

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Cube texture and microstructural evolution of as-cast non-oriented silicon steel (1.3% Si) during cold rolling and annealing were studied. The results showed that the as-cast microstructure with grain size in the range of 100–500 μm had a weak texture. The strong orientation was mainly located at {100} and {110} planes. A significant content of shear-deformed grains oriented with {110}<110> were obtained by cold-rolling, and many regions oriented with Cube texture were distributed in the shear bands. During cold-rolling, the orientation of the shear-deformed microstructure tilted towards the {111}<112> orientation, while the matrix orientation retained {110}<110>. On further cold-rolling, the residual part of {110}<110> experienced shear deformation, forming more shear bands, strengthening the Cube orientation. During annealing, Cube orientation grains nucleated in the shear bands leading to strong Cube texture, and corresponding B50 was 1.83T/1.79T.

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“…The first one is to fine-tune the alloy composition of the material and introduce new precipitation particles to control the evolution of the texture during the recrystallization process [ 10 , 11 ]. The other and currently most common method is to optimize the microstructure and texture by processing technology, such as twin roll casting or rolling [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Shear Bands Induced by Asymmetric Rolling on Microstructure and Texture Evolution of Non-Oriented 3.3% Si Steel

Fang

Guo

et al. 2020

Materials

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In the present work, the microstructure and texture of non-oriented 3.3% Si steel processed by asymmetric rolling (ASR) and subsequent annealing at different temperatures were compared with those obtained when using traditional symmetric rolling (SR). This work aims to reveal the effect of shear bands introduced by the ASR on the microstructure and texture evolution. The ASR sample reaches a recrystallization fraction of 62% at an annealing temperature of 650 °C, which is 32% higher than that of the SR sample annealed at the same temperature. This can be attributed to the abundant shear bands introduced by the ASR, which serve as the heterogeneous nucleation sites for the recrystallized grains. When increasing the annealing temperature to 750 °C, complete recrystallization could be observed in both asymmetric- and symmetric-rolled samples. When using an annealing temperature of 650 °C, the γ-oriented grains were dominant in the surface layer, while strong Goss-oriented grains could be observed in the center in the ASR sample. This is due to the fragmented small subgrains with different orientations in the surface layer inhibiting the nucleation of Goss- and cube-oriented grains during the annealing. In contrast, numerous Goss- and cube-oriented grains were formed in the surface layer after complete recrystallization when the ASR sample was annealed at a temperature of 750 °C. This may be related to the higher thermal energy, which benefits the nucleation of the Goss- and cube-oriented grains. In addition, ASR significantly increased the strength of η-fiber after complete recrystallization when compared with SR. This work might be helpful to design the rolling and the subsequent annealing processes.

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Effect of annealing after strip casting on microstructure, precipitates and texture in non-oriented silicon steel produced by twin-roll strip casting

Cited by 19 publications

References 28 publications

Evolutions of Cube ({001}<100>) and {115}<161> Orientations in Cold-Rolled Ultra-Thin Non-Oriented Silicon Steel

Evolutions of Cube ({001}<100>) and {115}<161> Orientations in Cold-Rolled Ultra-Thin Non-Oriented Silicon Steel

Evolution of the Shear Band in Cold-Rolling of Strip-Cast Fe-1.3% Si Non-Oriented Silicon Steel

Effect of Shear Bands Induced by Asymmetric Rolling on Microstructure and Texture Evolution of Non-Oriented 3.3% Si Steel

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