An investigation on the role of texture evolution and ordered phase transition in soft magnetic properties of Fe–6.5  wt%Si electrical steel

Cai, Guojun; Li, Changsheng; Cai, Ban; Wang, Qiwen

doi:10.1016/j.jmmm.2017.01.054

Cited by 22 publications

(9 citation statements)

References 29 publications

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“…It is generally believed that resistance to the migration of the domain walls comes from grain boundaries, antiphase boundaries, and so forth. [36] For 6.5 wt% Si electrical steel samples, the cooling rate had no significant effect on its grain size. Thus, it was mainly the ordered phases that affected hysteresis loss.…”

Section: Iron Lossmentioning

confidence: 94%

Effect of Ordered Phases and Microstructures on the Iron Loss of 6.5 wt% Si Electrical Steel Quenched at Various Cooling Rates

Cheng

Liu

et al. 2022

steel research int.

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Herein, the effect of the ordered phases and microstructure of 6.5 wt% Si electrical steel recrystallized and quenched at different cooling rates on its iron loss is investigated. The varied cooling rate barely influences the grain size and the precipitation of Cu but affects the magnetic domain significantly. A higher cooling rate is associated with greater residual stress and hence, leads to an increase in the width of the magnetic domain. In terms of the ordered phases, the quantity of B2 first decreases and then increases with a rising cooling rate while the quantity of D03 decreases. Meanwhile, the size of B2 antiphase domains reduces, while the D03 antiphase domains are either too fine to be observed or absent at higher cooling rates. The increased residual stress, the refinement of B2 antiphase domains, and the associated larger pinning effect on the migration of magnetic domain walls jointly lead to higher hysteresis loss. In addition, the increased width of the magnetic domain results in a larger anomalous loss. Both effects give rise to an overall increase in the iron loss P10/50.

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Section: Iron Lossmentioning

confidence: 94%

Effect of Ordered Phases and Microstructures on the Iron Loss of 6.5 wt% Si Electrical Steel Quenched at Various Cooling Rates

Cheng

Liu

et al. 2022

steel research int.

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“…16,17 The increase of Si content facilitates grain boundary migration, leading to the formation of largesized grains, thereby significantly deteriorating the ductility of Si-containing steel. Grain boundary polarizing elements (Cu, Ni, Cr, Sn, Mo) 18,19 and dispersed secondary phase formationtransformation (e.g., MnS, CuS, AlN, MnSe, NbC) 13,20,21 can also suppress primary recrystallized grain growth and fixation grain boundaries. 22,23 Meanwhile, previous literatures have shown that the mechanical properties of 6.5 wt % Si electrical steel could be significantly improved with alloying technology.…”

Section: Introductionmentioning

confidence: 99%

Texture and Magnetic Property of Fe-6.5 wt % Si Steel Strip with Cu-Rich Particles Modification

Zhang

Yang

et al. 2023

ACS Omega

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Based on the ordered phase effectively suppressed by rapid solidification technology, the grain refinement concept using Cu is incorporated into the soft magnetic materials. Cu dosage not only could refine the grain size with an average grain size of 8.7 μm but also improve the continuity and consistency of Fe-6.5 wt % Si steel strip. It mainly attributes to the Cu-rich particles precipitating at the grain boundary, nailing the grain boundaries movement and inhibiting the grain growth, and then improving the magnetic properties and mechanical properties. The 1.5 wt % Cu sample exhibits an excellent magnetic property with the saturation magnetization of 236.54 emu/g, which mainly attributes to the strong η, λ, Goss texture formation and the band structure optimization of Si–Cu comodification. Furthermore, the mechanical properties of the steel strip are effectively improved, and the failure plastic deformation of 1.5 wt % Cu steel strip is about 11%. The rapid solidification with Cu-dosage refinement technology also has a remarkable reference on the mechanical properties and magnetic properties modification of other metal materials.

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“…Meanwhile, decreasing the density of the antiphase domain boundaries could reduce the hysteresis loss and iron loss. 16,17 During the ordered phase precipitation process, the antiphase domain boundary on magnetic domain walls could reduce the magnetic conductivity, improve the coercivity, and then deteriorate the magnetic energy significantly. A large number of studies presented that controlling the silicon content, 18 doping inhibitor elements, 10,19 and optimizing the cooling system 20 property.…”

Section: Introductionmentioning

confidence: 99%

“…Crystal grain size is the main factor affecting the iron loss, − and fine grains are more favorable for inhibiting the high-frequency iron loss because increasing the grain size could not only decrease the hysteresis loss (dominance in low frequency) but also increase the eddy-current loss (dominance in high frequency). Meanwhile, decreasing the density of the antiphase domain boundaries could reduce the hysteresis loss and iron loss. , During the ordered phase precipitation process, the antiphase domain boundary on magnetic domain walls could reduce the magnetic conductivity, improve the coercivity, and then deteriorate the magnetic energy significantly. A large number of studies presented that controlling the silicon content, doping inhibitor elements, , and optimizing the cooling system could improve the crystal grain size and the transformation process of the ordered phase and then improve the plasticity and machining property.…”

Section: Introductionmentioning

confidence: 99%

“…Increasing the silicon content could improve the grain boundary migration, resulting in the large-size crystal grain formation, which then significantly deteriorates the plasticity of the Fe–Si steel. Grain boundary polarized elements (e.g., Cu, Sn, Cr, Mo, Nb, and Bi) ,, and dispersed second phase formation (e.g., MnS, MnSe, AlN, and NbC) ,, also could restrain the primary recrystallization grain growth and pin the grain boundaries. The grain boundaries will migrate rapidly, engulf the surrounding fine grains, and grow abnormally when the annealing temperature reaches the decomposition temperature of the inhibitor.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the Fe-6.5wt%Si Strip with Rapid Cooling Coupling Deep Supercooled Solidification

Wang

Wang³

et al. 2021

ACS Omega

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The phase transition law between ordered and disordered phases, second phase reinforcement, microstructure, and mechanical properties were systematically studied in the rapid cooling coupling deep supercooled solidification process through an arc melting furnace, electromagnetic induction heating, and high-speed cooling single-roll technology. The results show that uniform nucleation and grain refinement are promoted under rapid cooling coupling deep supercooled solidification, and the phase transition from the disordered phase (A2) to the ordered phase (B2 and DO3) is also effectively suppressed. The decreased crystalline grain size and optimized microstructure morphology improved the plasticity and magnetic property. The Fe-6.5wt%Si steel strip at 42 m/s has a good phase composition of Fe (predominant), Fe2Si, and SiC. The sample showed an equiaxed ferrite crystal structure, and the saturation magnetizations were 302.5 and 356.6 emu/g in the parallel magnetic direction and the vertical magnetic direction, respectively. This phase transition behavior contributed to the exceptional magnetic property of the Fe-6.5wt%Si steel.

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An investigation on the role of texture evolution and ordered phase transition in soft magnetic properties of Fe–6.5 wt%Si electrical steel

Cited by 22 publications

References 29 publications

Effect of Ordered Phases and Microstructures on the Iron Loss of 6.5 wt% Si Electrical Steel Quenched at Various Cooling Rates

Effect of Ordered Phases and Microstructures on the Iron Loss of 6.5 wt% Si Electrical Steel Quenched at Various Cooling Rates

Texture and Magnetic Property of Fe-6.5 wt % Si Steel Strip with Cu-Rich Particles Modification

Characterization of the Fe-6.5wt%Si Strip with Rapid Cooling Coupling Deep Supercooled Solidification

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