Improving electromagnetic properties of FeCoNiSi0.4Al0.4 high entropy alloy powders via their tunable aspect ratio and elemental uniformity

Zhang, Bin; Duan, Yuping; Cui, Yuqing; Ma, Guiping; Wang, Tongmin; Dong, Xiaoli

doi:10.1016/j.matdes.2018.04.018

Cited by 64 publications

(20 citation statements)

References 40 publications

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“…When a balance is achieved between the repetitions of welding and fracturing, powder particles with a steady-state size distribution and homogeneously distributed elements will be obtained (Figure 5c and d). [107][108][109] An enhanced solid solubility, room-temperature processing and homogenous element distribution are the key benefits of mechanical alloying. [110] Among the alloying parameters, the milling time crucially determines the phases, crystal sizes and lattice strains of HEA powder particles.…”

Section: Mechanical Alloyingmentioning

confidence: 99%

“…Zhang et al illustrated that increasing the milling time led to the weakening of diffraction peaks of an Al0.4CoFeNiSi0.4 HEA powder (Figure 6a). [108] This indicated that a long milling time was disadvantageous to the phase identification of the powder. The increase in the milling time decreased the crystal sizes but increased the lattice strains within the powder particles (Figure 6b), due to the rise in grain boundary fractions and lattice deformation.…”

Section: Mechanical Alloyingmentioning

confidence: 99%

Section: Mechanical Alloyingmentioning

confidence: 99%

“…[108] Reproduced with permission. [108] Copyright 2018, Elsevier. The magnetic properties of mechanically alloyed HEA powders are dependent on the milling time and the type and proportion of their constituent ferromagnetic elements, as illustrated in Table 3.…”

Section: Mechanical Alloyingmentioning

confidence: 99%

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Recent Advances on High‐Entropy Alloys for 3D Printing

et al. 2020

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Boosted by the success of high-entropy alloys (HEAs) manufactured by conventional processes in various applications, the development of HEAs for three-dimensional (3D) printing has been advancing rapidly in recent years. 3D printing of HEAs gives rise to great potential for manufacturing geometrically complex HEA products with desirable performances, thereby inspiring their increased manifestation in industrial applications. In this paper, a comprehensive review of the recent achievements of 3D printing of HEAs is provided, in the aspects of their powder development, printing processes, microstructures, properties and potential applications. It begins with the introduction of the fundamentals of 3D printing and HEAs as well as the unique properties of 3D-printed HEA products. The processes for the development of HEA powders, including atomization and mechanical alloying, and the powder properties are then presented. Thereafter, typical processes for printing HEA products from powders, namely, directed energy deposition, selective laser 2 melting and electron beam melting, are discussed with regard to the phases, crystal features, mechanical properties, functionalities and potential applications of these products (particularly in the aerospace, energy, molding and tooling industries). Finally, perspectives are outlined to provide guidance for future research.

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Section: Mechanical Alloyingmentioning

confidence: 99%

Section: Mechanical Alloyingmentioning

confidence: 99%

Section: Mechanical Alloyingmentioning

confidence: 99%

Section: Mechanical Alloyingmentioning

confidence: 99%

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Recent Advances on High‐Entropy Alloys for 3D Printing

et al. 2020

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“…Our previous work studied the AC soft magnetic properties of FeCoNi (MnSi) x HEAs and found that a suitable content of MnSi can improve the AC soft magnetic properties [28]. Duan et al [29,30] prepared Fe-Co-Ni-Si-Al high-entropy powders by mechanical milling and studied their electromagnetic performance as wave absorbing materials under the frequency ranging from 1 GHz to 16 GHz. It is found that the electromagnetic parameters depend on the milling time and aspect ratio of powders.…”

Section: Introductionmentioning

confidence: 99%

The AC Soft Magnetic Properties of FeCoNixCuAl (1.0 ≤ x ≤ 1.75) High-Entropy Alloys

Wang

Zhang

et al. 2019

Materials

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High-entropy alloys (HEAs) with soft magnetic properties are one of the new candidate soft magnetic materials which are usually used under an alternating current (AC) magnetic field. In this work, the AC soft magnetic properties are investigated for FeCoNixCuAl (1.0 ≤ x ≤ 1.75) HEAs. The X-ray diffraction (XRD) and scanning electron microscope (SEM) show that the alloy consists of two phases, namely a face-centred cubic (FCC) phase and a body-centred cubic (BCC) phase. With increasing Ni content, the FCC phase content increased. Further research shows that the AC soft magnetic properties of these alloys are closely related to their phase constitution. Increasing the FCC phase content contributes to a decrease in the values of AC remanence (AC Br), AC coercivity (AC Hc) and AC total loss (Ps), while it is harmful to the AC maximum magnetic flux density (AC Bm). Ps can be divided into two parts: AC hysteresis loss (Ph) and eddy current loss (Pe). With increasing frequency f, the ratio of Ph/Ps decreases for all samples. When f ≤ 150 Hz, Ph/Ps > 70%, which means that Ph mainly contributes to Ps. When f ≥ 800 Hz, Ph/Ps < 40% (except for the x = 1.0 sample), which means that Pe mainly contributes to Ps. At the same frequency, the ratio of Ph/Ps decreases gradually with increasing FCC phase content. The values of Pe and Ph are mainly related to the electrical resistivity (ρ) and the AC Hc, respectively. This provides a direction to reduce Ps.

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Metal Powder Preparation Processes

2023

Metal Powder–Based Additive Manufacturing

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Improving electromagnetic properties of FeCoNiSi0.4Al0.4 high entropy alloy powders via their tunable aspect ratio and elemental uniformity

Cited by 64 publications

References 40 publications

Recent Advances on High‐Entropy Alloys for 3D Printing

Recent Advances on High‐Entropy Alloys for 3D Printing

The AC Soft Magnetic Properties of FeCoNixCuAl (1.0 ≤ x ≤ 1.75) High-Entropy Alloys

Metal Powder Preparation Processes

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