Through process texture evolution and magnetic properties of high Si non-oriented electrical steels

Sidor, Jurij J.; Verbeken, Kim; Gomes, Edgar; Schneider, J.; Calvillo, Pablo Rodríguez; Kestens, Léo

doi:10.1016/j.matchar.2012.06.006

Cited by 134 publications

(52 citation statements)

References 41 publications

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“…This change of CRD with respect to HRD gives rise to a different starting texture that conventional hot rolling may not be able to produce, since after conventional hot rolling and annealing, the texture is normally dominated by the a-and c-fibers. [7] The technique used in this study provides a potential approach to control the cold rolling and recrystallization textures through the alteration of the starting texture. As shown in Figure 6, the strongest texture (intensity 6.34) in the annealed hot band is 0 1 2 ffiffi 3 p It has been shown that, after a 30 deg rotation, the main feature of the starting texture was a strong {001}h110i (rotated Cube) component plus a relatively strong {110}h110i (rotated Goss) orientation.…”

Section: Discussionmentioning

confidence: 99%

“…[4] The texture in hot rolled and annealed strip is mainly determined by rolling temperature, coiling conditions, and hot band annealing parameters. [5][6][7][8] The chemical composition also plays an important role through its influence on phase transformation: grades with higher than 2.5 pct Si concentration usually do not have an austenite phase, while alloys with less than 2.5 pct Si normally have an austenite to ferrite transformation. [9,10] The cold rolling texture is mainly dependent on the initial texture, reduction rate and whether intermediate annealing is applied between cold rolling steps or not.…”

Section: Introductionmentioning

confidence: 99%

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Texture Evolution of a Non-oriented Electrical Steel Cold Rolled at Directions Different from the Hot Rolling Direction

Hilinski²,

2015

Metall Mater Trans A

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With the objective of optimizing the crystallographic texture of non-oriented electrical steel, i.e., reducing the h111i//ND and h110i//RD fibers and promoting the h001i//ND texture, a new rolling scheme was proposed and tested, in which the cold rolling direction (CRD) was intentionally inclined at an angle to the hot rolling direction (HRD) in order to change the orientation flow paths during cold rolling and alter the final texture of the annealed sheets. A non-oriented electrical steel containing 0.88 wt pct Si was hot rolled using conventional routes and annealed, and a number of rectangular plates were cut from the hot band with the longitudinal directions inclined at various angles, i.e., 0, 15, 30, 45, 60, 75, and 90 deg, to the HRD. These plates were then cold rolled along the longitudinal directions with a thickness reduction of 72 pct. The cold-rolled samples were annealed, temper rolled and annealed again (final annealing). The texture evolution during hot rolling, hot band annealing, cold rolling, and final annealing was characterized by electron backscatter diffraction and X-ray diffraction techniques. By changing the CRD with respect to the HRD, the initial texture and the orientation flow paths were altered, which resulted in apparent differences in the textures as compared to conventional cold rolling. After temper rolling and final annealing, the recrystallization textures consisted of mainly a h001i//ND fiber and there was almost no h111i//ND fiber. The sample cold rolled at an angle of 60 deg to the HRD had the strongest texture (intensity almost 29 of conventional rolling) with a maximum at the cube {001}h100i orientation-a magnetically favorable orientation for non-oriented electrical steels.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Texture Evolution of a Non-oriented Electrical Steel Cold Rolled at Directions Different from the Hot Rolling Direction

Hilinski²,

2015

Metall Mater Trans A

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“…The magnetic properties of electrical steels such as magnetization curves, permeability and specific losses are, to a large extent, correlated by two microstructural features: (i) the final texture and (ii) the average grain size [1,2]. The NO electrotechnical steels are characterized by uniform magnetic properties within all in-plane directions which could be provided ideally by so-called "rotating" cube texture {100} uvw , where the grains have their {100} planes parallel to the sheet surface and all possible rotational positions about this normal.…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Processing in High Magnetic Field on Soft Magnetic Properties and Crystallographic Texture of Non-Oriented Fe-Si Steels

et al. 2017

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In this work, we report on the effects of high static magnetic field on the formation of desirable crystallographic orientation of grains ("rotating" cube) during the primary recrystallization of non-oriented steels. Vacuum degassed non-oriented steel with the silicon content about 1 wt% was taken from industrial line after final cold rolling with 80% of deformation and then it was subjected to the laboratory annealing at temperature of primary recrystallization. Whole annealing process was carried with and without the applied external magnetic field of 14 T. The analysis of crystallographic orientation of experimental material was studied by electron backscattered diffraction technique. The microstructural and textural observations have shown a small difference in average grain size between samples annealed with and without magnetic field as well as increase of the "rotating" Cube component and decrease of the intensity of deformation texture by application of magnetic field. The magnetic measurements show that the coercivity value of the sample annealed in the magnetic field of 14 T can be reduced by approximately 3% in comparison with sample annealed under the zero field conditions.

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“…Therefore, no homogenisation of the microstructure during hot rolling takes place. Besides the specific technological rolling parameters, the existing gradients of strain and temperature affects much more the resulting microstructure and texture at the production of the hot strip compared to steels with a phase transformation [2][3][4]. It was found that higher intensities of θ-fibre can be obtained in the hot strip.…”

Section: Introductionmentioning

confidence: 99%

Influence of cubic texture intensity of hot rolled ferritic non-oriented electrical steels on the microstructure and texture in the final processed material

Stöcker

Schneider

Scholze

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The magnetic properties of non-oriented electrical steels are determined by the microstructure and texture of the material. Besides optimum grain size (microstructure) for low values of specific magnetic losses, a high intensity of θ-fibre texture and low intensity of γ-fibre and α-fibre texture is desirable. Each of the processing steps influences the intensity of the θ-fibre in the final processed material. In this paper the interplay of the various processing steps on the intensity of the θ-fibre is regarded for ferritic Iron-Silicon steels with 2.4 wt.% Si and 3.0 wt.% Si.

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Through process texture evolution and magnetic properties of high Si non-oriented electrical steels

Cited by 134 publications

References 41 publications

Texture Evolution of a Non-oriented Electrical Steel Cold Rolled at Directions Different from the Hot Rolling Direction

Texture Evolution of a Non-oriented Electrical Steel Cold Rolled at Directions Different from the Hot Rolling Direction

Influence of Thermal Processing in High Magnetic Field on Soft Magnetic Properties and Crystallographic Texture of Non-Oriented Fe-Si Steels

Influence of cubic texture intensity of hot rolled ferritic non-oriented electrical steels on the microstructure and texture in the final processed material

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