Texture formation in FeGa alloy at cold hydrostatic extrusion and primary recrystallization

Milyutin, V. A.; Gervasyeva, I.V.; Волкова, Е. Г.; Alexandrov, A.; Чеверикин, В. В.; Mansouri, Y.; Palacheva, V.V.; Golovin, I.S.

doi:10.1016/j.jallcom.2019.153283

Cited by 16 publications

(4 citation statements)

References 26 publications

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“…As noted earlier, traditionally, the creation of high-frequency magnetic (including magnetostrictive) devices is based on a simple idea, which consists of reducing the continuous cross-section area of the conductive material that is perpendicular to the applied field. It should be noted that, depending on the purpose, the Fe-Ga alloy is obtained in the form of a wide range of different products, some of which, among other things, can be used at elevated frequencies, e.g., amorphous ribbons [21], thin films [44], wires [45], and rods [46]. For example, thin films are in a promising direction and appropriate for high-frequency ap-plications due to their very low thickness of <1 µm and deserve a separate study.…”

Section: Engineering Solutions For High-frequency Applications Of Fe-gamentioning

confidence: 99%

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

Milyutin,

Bureš,

Fáberová

2023

Condensed Matter

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Fe-Ga is a promising magnetostrictive rare-earth free alloy with an attractive combination of useful properties. In this review, we consider this material through the lens of its potential use in magnetostrictive applications at elevated frequencies. The properties of the Fe-Ga alloy are compared with other popular magnetostrictive alloys. The two different approaches to reducing eddy current losses for such applications in the context of the Fe-Ga alloy, in particular, the fabrication of thin sheets and Fe-Ga/epoxy composites, are discussed. For the first time, the results of more than a decade of research aimed at developing each of these approaches are analyzed and summarized. The features of each approach, as well as the advantages and disadvantages, are outlined. In general, it has been shown that the Fe-Ga alloy is the most promising magnetostrictive material for use at elevated frequencies (up to 100 kHz) compared to analogs. However, for a wide practical application of the alloy, it is still necessary to solve several problems, which are described in this review.

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Section: Engineering Solutions For High-frequency Applications Of Fe-gamentioning

confidence: 99%

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

Milyutin,

Bureš,

Fáberová

2023

Condensed Matter

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“…Magnetostrictive materials are important mediums enabling bidirectional energy exchange between magnetic and elastic states under a magnetic field, which provides infinite possibility for their applications in actuators, implants, and energy harvesting [1][2][3]. There is considerable interest in magnetostrictive Fe-Ga alloys owing to their good machinability, high Curie temperature, and high permeability [4,5]. In particular, polycrystalline Fe-Ga alloys are superior in structural diversity, preparation process, and mechanical properties compared to single-crystal Fe-Ga alloys, which inherently possess limited dimensions and configurations, thus offering a wider range of applications.…”

Section: Introductionmentioning

confidence: 99%

Laser-beam powder bed fusion of magnetostrictive Fe₈₁Ga₁₉ alloys: parameter optimization, microstructural evolution and magnetostrictive properties

Yao,

Deng,

Wang

et al. 2024

Phys. Scr.

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Magnetostrictive Fe-Ga alloys, featuring with good machinability, high Curie temperature, and high permeability, have received increasing attention in fields such as actuators, implants, and energy harvesting. Unfortunately, bulk polycrystalline Fe-Ga alloys usually suffer poor magnetostrictive strains compromised by the randomness of grain structure and the intricate phase constitution. The current study was centered on the fabrication of bulk polycrystalline Fe81Ga19 alloys with tailored grain morphology and phase arrangement utilizing laser-beam powder bed fusion (LPBF) technology. Particular emphasis was laid on investigating the repercussions of LPBF process parameters on the microstructure and magnetostrictive performance. The findings illustrated a non-linear interplay between laser power and the relative density of laser powder bed fusion-fabricated (LPBFed) Fe81Ga19 alloys, marked by an initial augmentation followed by a subsequent decrement. Similarly, a consistent trend was observed for the LPBFed alloys at varying scan speeds. In particular, the LPBFed Fe81Ga19 alloys exhibited a highest density at optimized process parameters (laser power set at 120 W paired with a scan speed of 100 mm/s) due to suitable laser energy input during LPBF process. It was experimentally shown that elongated columnar grains and disorder A2 phase structures were obtained within the alloys attibutes to the high temperature gradient and rapid cooling kinetics intrinsic to LPBF, contributing to a desirable magnetostrictive strain of ~87 ppm for bulk polycrystalline Fe81Ga19 alloys. Moreover, a good dynamic magnetostrictive response of the LPBFed alloys was confirmed by the near-synchronous variations between magnetostrictive behavior and alternating magnetic fields. It can be derived from these findings that LPBF process may be a promising method to prepare bulk magnetostrictive Fe-Ga alloys for versatile applications.

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“…Like the magnetic anisotropy energy of a crystal, magnetostriction depends on crystal orientation [8][9][10][11]. Magnetostrictive materials are influenced by numerous factors, including the textures of polycrystalline materials, crystal orientation, and lattice strain.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Magnetostrictive Fe–Co Alloys

et al. 2022

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Fe–Co alloys are attracting attention as magnetostrictive materials for energy harvesting and sensor applications. This work investigated the magnetostriction characteristics and crystal structure of additive-manufactured Fe–Co alloys using directed energy deposition. The additive-manufactured Fe–Co parts tended to exhibit better magnetostrictive performance than the hot-rolled Fe–Co alloy. The anisotropy energy ΔK1 for the Fe–Co bulk, prepared under a power of 300 W (referred to as bulk−300 W), was larger than for the rolled sample. For the bulk−300 W sample in a particular plane, the piezomagnetic constant d was large, irrespective of the direction of the magnetic field. Elongated voids that formed during additive manufacturing changed the magnetostrictive behavior in a direction perpendicular to these voids. Magnetic property measurements showed that the coercivity decreased. Since sensors should be highly responsive, Fe–Co three-dimensional parts produced via additive manufacturing can be applied as force sensors.

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Texture formation in FeGa alloy at cold hydrostatic extrusion and primary recrystallization

Cited by 16 publications

References 26 publications

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

Laser-beam powder bed fusion of magnetostrictive Fe₈₁Ga₁₉ alloys: parameter optimization, microstructural evolution and magnetostrictive properties

Additive Manufacturing of Magnetostrictive Fe–Co Alloys

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Texture formation in FeGa alloy at cold hydrostatic extrusion and primary recrystallization

Cited by 16 publications

References 26 publications

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

Laser-beam powder bed fusion of magnetostrictive Fe81Ga19 alloys: parameter optimization, microstructural evolution and magnetostrictive properties

Additive Manufacturing of Magnetostrictive Fe–Co Alloys

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Product

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Laser-beam powder bed fusion of magnetostrictive Fe₈₁Ga₁₉ alloys: parameter optimization, microstructural evolution and magnetostrictive properties