Fe-B-Si-C-Cu amorphous and nanocrystalline alloys with ultrahigh hardness and enhanced soft magnetic properties

Liu, C.; Inoue, Akihisa; Kong, F.L.; Zanaeva, E.N.; Базлов, А. И.; Churyumov, A. Yu.; Zhu, Shengli; Marzouki, F. Al; Shull, Robert D.

doi:10.1016/j.jnoncrysol.2020.120606

Cited by 31 publications

(7 citation statements)

References 39 publications

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“…However, the crystallization peaks were observed on the dull sides of the ribbons under the annealing temperature of 460 °C. This can be explained by the fact that the dull sides of the ribbons have lower fractions of metalloid elements than those on the shiny side [ 40 , 41 , 42 ].…”

Section: Resultsmentioning

confidence: 99%

Magnetomechanical Properties of Fe-Si-B and Fe-Co-Si-B Metallic Glasses by Various Annealing Temperatures for Actuation Applications

Sun

Zhang

et al. 2022

Sensors

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Fe-based amorphous alloys have advantages of low iron loss and high effective permeability, which are widely used in sensors and actuators. Power efficiency is one of the most important indicators among power conversion applications. We compared the magnetomechancial power conversion factors of metallic glassy ribbons FeCoSiB (Vitrovac 7600) and FeSiB (Metglas 2605SA1). We investigated the crystallization process under different annealing temperatures and tested the magnetomechancial coupling factors (k) and quality factors (Q) by using resonant and anti-resonant methods. We found that the maximum coupling factor of the annealed Vitrovac ribbons was 23% and the figure of merits k2Q was 4–7; however, the maximum coupling factor of the annealed Metglas ribbons was 73% and the maximum value of k2Q was 16. We can observe that the Metglas 2605SA1 ribbons have higher values of the magnetomechanical power efficiency than those of the Vitrovac 7600 ribbons, which means they are better to be used in subsequent research regarding acoustically driven antennas.

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Section: Resultsmentioning

confidence: 99%

Magnetomechanical Properties of Fe-Si-B and Fe-Co-Si-B Metallic Glasses by Various Annealing Temperatures for Actuation Applications

Sun

Zhang

et al. 2022

Sensors

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“…It is known that the magnetic behavior is better if the percentage of the magnetic elements (Fe and Ni in this study) is around 83 at.% [16]. Likewise, high B/Si ratio is associated with a lower reduction of the saturation magnetic flux density (if compared with low B/Si ratio alloys) [17]. We studied the influence of milling time on morphology, phase evolution, and the structure Metals 2021, 11, 1679 2 of 15 and microstructure of the powders.…”

Section: Introductionmentioning

confidence: 63%

Microstructural and Magnetic Behavior of Nanocrystalline Fe-12Ni-16B-2Si Alloy Synthesis and Characterization

Zaara

Khitouni

Escoda

et al. 2021

Metals

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The nanocrystalline Fe70Ni12B16Si2 (at.%) alloy was prepared by mechanical alloying (MA) of elemental powders in a high-energy planetary ball mill. Phase evolution, microstructure, thermal behavior and magnetic properties were investigated. It was found that a body-centered cubic structured solid solution started to form after 25 h milling and a faced-centered cubic structure solid solution started to form after 50 h of milling; its amount increased gradually with increasing milling time. The BCC and the FCC phases coexisted after 150 h of milling, with a refined microstructure of 13 nm and a 10 nm crystallite size. The as-milled powder was annealed at 450 °C and 650 °C and then investigated by vibrating sample magnetometry (VSM). It was shown that the semi-hard magnetic properties are affected by the phase transformation on annealing. The saturation magnetization decreases after annealing at 450 °C, whereas annealing at 650 °C improves the magnetic properties of 150 h milled powders through the reduction of coercivity from 109 Oe to 70 Oe and the increase in saturation magnetization.

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“…Figure 11 illustrates the dependence of coercivity on applied tensile stress. The coercivity remains steady at 3.3 A/m for applied stresses of 100 MPa and 200 MPa, then it increases with increasing tensile stress due to the appearance of the hard magnetic phase Fe 2 B [ 8 , 32 , 33 ] for applied stresses of 300 MPa and 400 MPa, and the hard magnetic phase FeNb [ 34 ] for an applied stress of 400 MPa. According to Equation (4), the coercivity could be determined by the crystalline volume fraction, the average grain size, and the saturation magnetization.…”

Section: Resultsmentioning

confidence: 99%

“…This condition leads to an almost negligible average magneto-crystalline anisotropy [ 4 , 7 ], and thus yields a relatively low coercivity (

) and an ultrahigh initial permeability (

). Moreover, factors such as the Si partition within the nanocrystals, the crystalline volume fraction, and other microstructural attributes affected by the annealing process impact both the saturation magnetization (

) and the saturation magnetostriction constant [ 8 , 9 ], which will influence the soft magnetic properties. Therefore, precise control over the annealing process is extremely important in order to obtain superior soft magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Irradiation and Tensile Stress on Microstructure and Magnetic Properties of Fe-Based Amorphous Alloys

Yao,

Huang,

Chen

et al. 2023

Nanomaterials

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The effect of laser irradiation and tensile stress on the microstructure and soft magnetic properties of the FeSiBNbCu nanocrystalline alloy prepared using a continuous laser has been investigated. The experimental results indicate that a decreased laser scanning speed provides more thermal energy to induce nanocrystals and encourage grain growth. When the scanning speed is excessively high, the crystallization process will cease due to a lack of energy to drive diffusion phase transitions. Nevertheless, the introduction of tensile stress could significantly promote crystallization in FeSiBNbCu alloy samples irradiated at these high laser scanning speeds. This phenomenon can be attributed to the augmentation of compressive thermal stress at the interface between the laser-treated track and the untreated region. This heightened compressive stress promotes the diffusivity of atoms, and, as a result, the transformation from amorphous to crystalline states can be enhanced. As the applied tensile stress increases, both grain size and crystalline volume fraction exhibit a proportional augmentation. Consequently, these changes manifest in the soft magnetic properties. The crystalline volume fraction can reach 62%, and the coercivity is 2.9 A/m at the optimized scanning speed; these values correspond to 54% and 3.3 A/m under specific tensile stress loading.

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Fe-B-Si-C-Cu amorphous and nanocrystalline alloys with ultrahigh hardness and enhanced soft magnetic properties

Cited by 31 publications

References 39 publications

Magnetomechanical Properties of Fe-Si-B and Fe-Co-Si-B Metallic Glasses by Various Annealing Temperatures for Actuation Applications

Magnetomechanical Properties of Fe-Si-B and Fe-Co-Si-B Metallic Glasses by Various Annealing Temperatures for Actuation Applications

Microstructural and Magnetic Behavior of Nanocrystalline Fe-12Ni-16B-2Si Alloy Synthesis and Characterization

Effect of Laser Irradiation and Tensile Stress on Microstructure and Magnetic Properties of Fe-Based Amorphous Alloys

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