Influence of Annealing before First Cold Rolling on Secondary Recrystallization of Fe-3%Si Alloy

Yoshitomi, Yasunari; Iwayama, K.; Kuroki, Katsuro; Matuo, Yukio; Masui, Hiroaki

doi:10.2320/jinstmet1952.57.6_612

Cited by 3 publications

(2 citation statements)

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“…Studies have been carried out to reduce the core loss and increase the magnetic flux density and permeability by controlling the microstructure and texture via the addition of alloying elements as well as through process control and heat treatment. [1][2][3][4][5][6] To improve the properties of grain-oriented electrical steel, it is important to use textures that have the <100> direction that eases magnetization. Textures that have this direction include the {100}<001> Cube texture in which the rolling direction and the direction normal to the rolling plane are the <100> direction, and the {110}<001> Goss texture in which the rolling direction is the <100> direction but the direction normal to the rolling plane is the <110> direction.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Goss Orientation during Rapid Heating for Primary Recrystallization in Grain-oriented Electrical Steel

Park

Lee

Joo³

et al. 2011

ISIJ Int.

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To obtain ideal Goss-oriented Fe-3.1%Si electrical steel, we studied the Goss orientation and microstructure during the various processes from hot-band annealing to the primary recrystallization. In particular, we examined the effect of the heating rate (20°C/s and 150°C/s) on the primary recrystallization behavior. In the annealed hot-band, the surface and middle layers have different textures. In the surface layer, a weak Goss texture developed, while in the inner layer, very strong α-fiber and weak γ -fiber texture were formed. The cold-rolled sheet had a relatively strong α-fiber and weak γ-fiber texture. In the coldrolled sheet, the Goss oriented grains with an average size of 0.15 μm were more in the surface layer than in the middle layer. One part of the Goss-oriented grains originated from the annealed hot-band, while the other was formed during the cold rolling. During recrystallization, the size of the Goss-oriented grains was not influenced by the heating rate. However, the fraction and distribution of the grains depended on the heating rate. For high heating rates, the fraction of Goss grains is larger, and these grains had similar distributions in both the surface and middle layers.

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Section: Introductionmentioning

confidence: 99%

Evolution of Goss Orientation during Rapid Heating for Primary Recrystallization in Grain-oriented Electrical Steel

Park

Lee

Joo³

et al. 2011

ISIJ Int.

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“…There has been continuous investigation on the control of the microstructure and texture of the electrical steel by adding alloying elements and subjecting it to manufacturing and heat treatment as well as on increasing the magnetic flux density and permeability of the steel while lowering the core loss. [1][2][3][4][5] In order to improve on these investigations from the perspective of the texture, it is essential for the Goss orientation ({110}<001>, that is, the rolling direction is parallel to the <100> direction and the rolling plane is parallel to the {110} plane) to have a very high density. It has been reported that heating rate influences on texture, microstructure and magnetic properties in non-oriented electrical steel.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Goss Orientation during Thermal Heating with Different Heating Rate for Primary Recrystallization in Grain-oriented Electrical Steel

2013

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In order to understand how exact Goss-oriented grains form in electrical steel, we studied Goss orientation and microstructure during primary recrystallization using electron back-scattered diffraction. In particular, we examined the effect of heating rate (20°C/s and 150°C/s) on the primary recrystallization behavior. In a cold rolled sheet, the Goss fraction in the outer layer is more than twice that in the inside layer, particularly because the fraction of Goss±5° grains is much greater at the surface compared with the inner part. When primary recrystallization is completed, the fraction of grains that have Goss±5° and ±10°o rientations in the outer and inner layer appear to be similar regardless of the heating rate, and the fraction of Goss±15° grains appears to be higher when the sheet is subjected to a rapid heating rate than when it is subjected to a typical heating rate. In addition, the number of Goss±5° grains corresponding to a rapid heating rate is twice that corresponding to a typical heating rate, with smaller grain sizes and a more uniform distribution.

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Effect of Hot Band Annealing on The Magnetic Properties of Conventional Grain-Oriented Electrical Steels

Han

Choi²,

Woo³

1998

7th Joint MMM-Intermag Conference. Abstracts (Cat. No.98CH36275)

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Influence of Annealing before First Cold Rolling on Secondary Recrystallization of Fe-3%Si Alloy

Cited by 3 publications

References 0 publications

Evolution of Goss Orientation during Rapid Heating for Primary Recrystallization in Grain-oriented Electrical Steel

Evolution of Goss Orientation during Rapid Heating for Primary Recrystallization in Grain-oriented Electrical Steel

Evolution of Goss Orientation during Thermal Heating with Different Heating Rate for Primary Recrystallization in Grain-oriented Electrical Steel

Effect of Hot Band Annealing on The Magnetic Properties of Conventional Grain-Oriented Electrical Steels

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