scholarly journals Influence of non-magnetic Cu on enhancing the low temperature magnetic properties and Curie temperature of FeCoNiCrCu(x) high entropy alloys

2020 ◽  
Vol 182 ◽  
pp. 99-103 ◽  
Author(s):  
Varun Chaudhary ◽  
Vishal Soni ◽  
Bharat Gwalani ◽  
R.V. Ramanujan ◽  
Rajarshi Banerjee
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Curie Temperature ◽  
High Entropy Alloys ◽  
High Entropy

scholarly journals Conventional and Electromagnetic-induction Sintering of High Entropy Alloys for Low-temperature Applications

2020 ◽  
Vol 26 (S2) ◽  
pp. 2916-2917
Author(s):  
Luis Laguna Zubia ◽  
C.G. Garay-Reyes ◽  
M.A. Ruiz-Esparza-Rodriguez ◽  
J.M. Mendoza-Duarte ◽  
Ivanovich Estrada ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electromagnetic Induction ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Temperature Applications

Effect of grain and phase boundaries on soft magnetic properties of FeCoNiAlSi high-entropy alloys

2021 ◽  
pp. 129965
Author(s):  
Zhong Li ◽  
Jianing Qi ◽  
Zhuangzhuang Li ◽  
Hongxia Li ◽  
Hui Xu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
High Entropy Alloys ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Phase Boundaries ◽  
High Entropy

scholarly journals Effects of La on Thermal Stability, Phase Formation and Magnetic Properties of Fe–Co–Ni–Si–B–La High Entropy Alloys

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1907
Author(s):  
Jiaming Li ◽  
Jianliang Zuo ◽  
Hongya Yu
Keyword(s):  
Thermal Stability ◽  
Magnetic Properties ◽  
Saturation Magnetization ◽  
Phase Formation ◽  
Crystallization Temperature ◽  
High Entropy Alloys ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
High Entropy ◽  
Bcc Phase

The microstructure, phase formation, thermal stability and soft magnetic properties of melt-spun high entropy alloys (HEAs) Fe27Co27Ni27Si10−xB9Lax with various La substitutions for Si (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) were investigated in this work. The Fe27Co27Ni27Si10−xB9La0.6 alloy shows superior soft magnetic properties with low coercivity Hc of ~7.1 A/m and high saturation magnetization Bs of 1.07 T. The content of La has an important effect on the primary crystallization temperature (Tx1) and the secondary crystallization temperature (Tx2) of the alloys. After annealing at relatively low temperature, the saturation magnetization of the alloy increases and the microstructure with a small amount of body-centered cubic (BCC) phase embedded in amorphous matrix is observed. Increasing the annealing temperature reduces the magnetization due to the transformation of BCC phase into face-centered cubic (FCC) phase.

Effects of phase composition and elemental partitioning on soft magnetic properties of AlFeCoCrMn high entropy alloys

2019 ◽  
Vol 171 ◽  
pp. 31-39 ◽  
Author(s):  
Chanwon Jung ◽  
Ku Kang ◽  
Amalraj Marshal ◽  
Konda Gokuldoss Pradeep ◽  
Jae-Bok Seol ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Phase Composition ◽  
High Entropy Alloys ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
High Entropy

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

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4222 ◽  
Author(s):  
Zhongyuan Wu ◽  
Chenxu Wang ◽  
Yin Zhang ◽  
Xiaomeng Feng ◽  
Yong Gu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Soft Magnetic Materials ◽  
Magnetic Flux Density ◽  
High Entropy Alloys ◽  
Soft Magnetic Properties ◽  
Phase Content ◽  
Soft Magnetic ◽  
High Entropy ◽  
Two Phases ◽  
Fcc Phase

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.

Phase transitions and magnetic properties of Fe30Co29Ni29Zr7B4Cu1 high-entropy alloys

2019 ◽  
Vol 789 ◽  
pp. 762-767 ◽  
Author(s):  
Ran Wei ◽  
Hang Zhang ◽  
Hongyan Wang ◽  
Chen Chen ◽  
Tan Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Phase Transitions ◽  
High Entropy Alloys ◽  
High Entropy

scholarly journals Thermal Expansion, Elastic and Magnetic Properties of FeCoNiCu-Based High-Entropy Alloys Using First-Principle Theory

JOM ◽  
2017 ◽  
Vol 69 (11) ◽  
pp. 2107-2112 ◽  
Author(s):  
Shuo Huang ◽  
Ádám Vida ◽  
Anita Heczel ◽  
Erik Holmström ◽  
Levente Vitos
Keyword(s):  
Magnetic Properties ◽  
Thermal Expansion ◽  
High Entropy Alloys ◽  
First Principle ◽  
High Entropy ◽  
Principle Theory

scholarly journals The effect of cooling rate on the magnetic properties of Cu-Fe-Ni multicomponent alloys with Al and Si additions

2018 ◽  
Vol 26 (1) ◽  
pp. 39-44
Author(s):  
O. I. Kushnerov ◽  
V. F. Bashev
Keyword(s):  
Magnetic Properties ◽  
Cooling Rate ◽  
Alloy System ◽  
Enthalpy Of Mixing ◽  
Soft Magnetic Materials ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Leading Role ◽  
The Difference ◽  
Fcc Phase

The paper explores the structure and magnetic properties of multicomponent high-entropy Al-Cu-Fe-Ni-Si alloys in as-cast and splat-quenched state. This alloy system is characterized by the absence of expensive components, such as Co, V, Mo, Cr, usually used for the production of high-entropy alloys while its characteristics are not inferior to those of more expensive alloys. Components of the studied high-entropy alloys were selected taking into account both criteria for designing and estimating their phase composition, which are available in the literature and based on the calculations of the entropy and enthalpy of mixing, and the difference between atomic radii of components as well. The alloy films were fabricated by a known technique of splat-quenching. A cooling rate estimated by film thickness was ~ 106 K/s. Experimental results reveal that the studied alloys except the Al0.5CuFeNi one are multiphase, with the structure consisting of disordered BCC and FCC solid solutions. The Al0.5CuFeNi alloy has only FCC phase. The leading role in determining the type of solid solution formed in the studied high-entropy films obviously plays an element with the highest melting point. All of the investigated multicomponent films are soft magnetic materials as indicated by low values of coercivity, while most of the as-cast alloys are hard-magnetic.

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