Texture and magnetic properties of rapidly quenched Fe-6.5wt%Si ribbon

Chang, C. W.; Bye, R.L.; Laxmanan, V.; Das, Sarbanoo

doi:10.1109/tmag.1984.1063129

Cited by 27 publications

(9 citation statements)

References 8 publications

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“…Compared to cobalt it seems that silicon is one of the most effective alloying elements for soft-magnetic materials. The high potential of iron alloys containing 6-7 wt% Si as high permeability, high magnetization saturation, low magnetostriction and low power loss for ferromagnetic applications has been known for some time [8]. Almost the same microhardness was observed for two alloys Fe-3 wt% Si and Fe-17 wt% Co. Fig.…”

Section: Vickers Hardness Measurementsmentioning

confidence: 66%

Magnetic characteristics of HPT deformed soft-magnetic materials

Scheriau

Kriegisch

Kleber

et al. 2010

Journal of Magnetism and Magnetic Materials

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Section: Vickers Hardness Measurementsmentioning

confidence: 66%

Magnetic characteristics of HPT deformed soft-magnetic materials

Scheriau

Kriegisch

Kleber

et al. 2010

Journal of Magnetism and Magnetic Materials

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“…[12][13][14][15][16][17][18][19][20] The most well-known example is the direct casting (the liquid to solid phase transformation) of steel strips which have the same bcc structure up to the melting point. 12,13) In the cases of the g to a transformation in Fe and Fe-base alloys, although the texture is known to be rather randomized, 21) several exceptions were reported which show relatively strong ͗100͘ texture. [14][15][16][17][18][19][20] Among the proposed methods, only one process is considered to be commercially feasible now.…”

mentioning

confidence: 99%

Efficient Generation of Cube-on-Face Crystallographic Texture in Iron and its Alloys

et al. 2011

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Most polycrystalline metals contain crystals which are not randomly oriented in space, but rather, their axes are approximately aligned with the macroscopic shape of the sample. The non-random distribution arises because of oriented processing, heat-treatment or phase transformation. The sample is then said to be crystallographically textured and exhibits macroscopically anisotropic properties, which reflect the orientation distribution. Such anisotropy can be advantageous. In ferritic iron, the magnetic flux density rises most easily along ͗100͘ directions, in contrast to ͗111͘ directions which are said to be magnetically hard. Steels which are used for electrical applications involving rapid changes in magnetic field therefore perform better in terms of energy loss, permeability as well as magnetic flux density when the crystals are aligned with ͗100͘ directions parallel to the sheet normal. The {100} planes which contain two perpendicular ͗001͘ directions and no ͗111͘ direction are naturally the planes of easy magnetisation, so a texture in which these planes are aligned to the sheet surface with the cube edges parallel to the sample axes is known as the cube texture, {100}͗001͘. A cube-on-face texture on the other hand corresponds to the {100}͗0vw͘ orientation.Due to the magnetic anisotropy, the texture control is a fundamental tool to improve magnetic properties of electrical steels and can have a very large impact on energy consumption. Electrical steels are soft magnetic iron-silicon alloys with varying silicon contents, which are used for transformers, motors, generators, alternators, ballasts and a variety of other electromagnetic applications. Since more than half of the electricity generated is used to drive electrical motors, efficiency of motors affects energy consumption significantly and thereby green house gas emissions. Typical efficiency of motors ranges from 83 to 92%, and their operating efficiency is far below, 62%.1,2) The only way to improve motor efficiency is to reduce motor losses. Loss components in an induction motor consist of the core loss in iron cores, the copper loss in rotors and stators, the stray load loss, and the friction and windage loss. 1) Among them, the copper loss and the core loss, which cover at least 75% of the overall losses, can be reduced significantly by improving magnetic flux density along with reducing iron loss through the texture control of core materials.Although the ideal texture for rotating machines is known to be the cube-on-face, there is no efficient method for its manufacture. In Fe and Fe-base bcc alloys, the cubeon-face texture does not evolve by the ordinary cold rolling and recrystallization processes. Although a strong a fiber develops during the cold rolling process, which includes the {100}͗011͘ component, it disappears almost completely after the indispensable recrystallization for good magnetic properties. The resulting recrystallization texture is a strong g fiber, instead.3) Since late 1950's, various process routes have been proposed to ...

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“…The brittleness can be overcome by rapid quenching from the melt, which suppresses the formation of the B2 and D0 3 type ordered structures in Fe-6.5 wt.% Si (Fe–6Si) alloy. However, the ribbons formed by the rapid quenching process are about 20–60 μm thick and due to the limited size of the ribbon, rapid quenching has not succeeded in industry [9]. Increasing the Si content and processing to the desired properties is still a challenge with Fe–Si materials.…”

Section: Introductionmentioning

confidence: 99%

Binder jet additive manufacturing method to fabricate near net shape crack-free highly dense Fe-6.5 wt.% Si soft magnets

Cramer

Nandwana

Yan

et al. 2019

Heliyon

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High silicon (Si) electrical steel has the potential for efficient use in applications such as electrical motors and generators with cost-effective in processing, but it is difficult to manufacture. Increasing the Si content beyond 3 wt.% improves magnetic and electrical properties, with 6.5 wt.% being achievable. The main goal of this research is to design, develop, and implement a scalable additive manufacturing process to fabricate Fe with 6.5 wt.% Si (Fe–6Si) steel with high magnetic permeability, high electrical resistivity, low coercivity, and low residual induction that other methods cannot achieve because of manufacturing limitations. Binder jet additive manufacturing was used to deposit near net shape components that were subsequently sintered via solid-state sintering to achieve near full densification. Here, it is shown that the use of solid-state sintering mitigates cracking since no rapid solidification occurs unlike fusion-based additive technologies. The Fe–6Si samples demonstrated an ultimate tensile strength of 434 MPa, electrical resistivity of 98 μΩ cm, and saturation magnetization of 1.83 T with low coercivity and high permeability. The results strongly supports to replace the only available 0.1 mm thick chemical vapor deposition (CVD) produced Si steel using the cost effective AM method with good mechanical and magnetic properties for motor applications.

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Texture and magnetic properties of rapidly quenched Fe-6.5wt%Si ribbon

Cited by 27 publications

References 8 publications

Magnetic characteristics of HPT deformed soft-magnetic materials

Magnetic characteristics of HPT deformed soft-magnetic materials

Efficient Generation of Cube-on-Face Crystallographic Texture in Iron and its Alloys

Binder jet additive manufacturing method to fabricate near net shape crack-free highly dense Fe-6.5 wt.% Si soft magnets

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