Nonoriented magnetic steel with improved texture and permeability

Huneus, H.; Günther, Klaus; Kochmann, T.; Plutniok, V.; Schoppa, A.

doi:10.1007/bf02660286

Cited by 48 publications

(17 citation statements)

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“…Reducing the amount of deformation and decreasing the hot rolling temperature typically induce an enhanced magnetic induction in non-oriented electrical steels [9]. It was also found that hot band annealing results in enhanced permeability in Fe-Si steels [11,12]. In addition to the TMP parameters, the chemical composition [9,12,13], by way of its influence on phase transformations, plays an important role in both microstructure and texture evolutions.…”

Section: Introductionmentioning

confidence: 98%

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

Sidor

Verbeken

Gomes

et al. 2012

Materials Characterization

141

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Section: Introductionmentioning

confidence: 98%

“…It was also found that hot band annealing results in enhanced permeability in Fe-Si steels [11,12]. In addition to the TMP parameters, the chemical composition [9,12,13], by way of its influence on phase transformations, plays an important role in both microstructure and texture evolutions. High Si containing grades, i.e.…”

Section: Introductionmentioning

confidence: 99%

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

Sidor

Verbeken

Gomes

et al. 2012

Materials Characterization

141

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“…They should meet the requirements of low iron loss and high magnetic induction in order to reduce energy losses and enhance the efficiency during the process of electromagnetic transition. The magnetic properties are mainly influenced by impurity level, strip thickness, silicon concentration, grain size as well as crystallographic texture [1]. High-silicon non-oriented electrical steel sheet containing 6.5 wt% Si is an ideal core material with excellent soft magnetic properties such as high permeability and saturation magnetization, almost zero magnetostriction, low eddy current and hysteresis losses especially at high frequencies [2].…”

Section: Introductionmentioning

confidence: 99%

Effects of rolling temperature on microstructure, texture, formability and magnetic properties in strip casting Fe-6.5 wt% Si non-oriented electrical steel

Liu

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…Although the anisotropy of the magnetization behavior causes the crystallographic texture to be an important parameter for overall quality of the electrical steel, it is not yet possible to obtain optimal textures in commercially produced electrical steels. This is caused by the complexity of texture formation and the interaction with other microstructural characteristics, as mentioned above, despite the various efforts that are given in literature [26][27][28][29][30][31] to optimize the texture of non-oriented electrical steel by varying thermo-mechanical processing. Therefore, in order to describe and quantify the magnetic texture quality of a non-oriented electrical Figure 9.…”

Section: Crystallographic Texturementioning

confidence: 99%

Innovative processing for improved electrical steel properties

et al. 2010

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Electrical steel grades are the normal construction material for electrical motors and transformers because of their enhanced soft magnetic properties. One of the current trends in their production aims for increasing the silicon and/or aluminum concentration (above 3 wt %) to reduce magnetic losses through increased electrical resistivity. This is very difficult to realize by conventional processing, mainly because of cracking during cold rolling. An alternative production route is proposed that raises the silicon and/or aluminum concentration by surface deposition of silicon and/or aluminum on a low-Si/low-Al steel substrate, e.g. by a short immersion in a molten Al-Si bath, followed by its diffusion into the bulk during subsequent annealing. This diffusion substantially modifies the microstructural features and therefore affects the mechanical and magnetic properties. Results of research efforts to optimize this production route and to understand the mechanisms and effects of the structural changes are presented and discussed. KeywordsElectrical steel; Hot dipping; Diffusion annealing; Magnetic properties; Crystallographic texture. Innovación del proceso para mejorar las propiedades de los aceros eléctricos ResumenLos aceros eléctricos se usan, normalmente, en la construcción de motores eléctricos y transformadores debido a sus suaves propiedades magnéticas. Una de las tendencias actuales es producir aceros con contenidos mayores de silicio y/o aluminio (por encima de un 3 %, en peso) para reducir las pérdidas magnéticas a través del incremento de la resistividad eléctrica. Una de las desventajas de producir este tipo de aceros con altos contenidos de silicio y/o aluminio es el agrietamiento producido en el material durante el proceso de laminado en frío. Para incrementar el contenido de silicio y/o aluminio en aceros con bajos contenidos de estos elementos de aleación, se sugiere un procedimiento alternativo de producción que se basa, fundamentalmente, en depositar un recubrimiento rico en silicio y/o aluminio, en la superficie del acero. Por ejemplo, uno de los métodos utilizados es sumergir el material en una aleación liquida de Al-Si, seguido de un recocido para promover la difusión del aluminio y el silicio del recubrimiento al acero. Este proceso de difusión modifica, sustancialmente, la microestructura y, a su vez, deteriora las propiedades magnéticas y mecánicas. Algunos de los resultados obtenidos como parte del esfuerzo para optimizar este nuevo método de producción y sus efectos en los posibles cambios de la microestructura y propiedades, se presentan y analizan en este trabajo.

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Nonoriented magnetic steel with improved texture and permeability

Cited by 48 publications

References 0 publications

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

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

Effects of rolling temperature on microstructure, texture, formability and magnetic properties in strip casting Fe-6.5 wt% Si non-oriented electrical steel

Innovative processing for improved electrical steel properties

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