More than entropy in high-entropy alloys: Forming solid solutions or amorphous phase

2013 ◽  
Vol 41 ◽  
pp. 96-103 ◽  
Author(s):  
Sheng Guo ◽  
Qiang Hu ◽  
Chun Ng ◽  
C.T. Liu
Keyword(s):  
Amorphous Phase ◽  
Solid Solutions ◽  
High Entropy Alloys ◽  
High Entropy

Physical metallurgy of concentrated solid solutions from low-entropy to high-entropy alloys

2017 ◽  
Vol 21 (6) ◽  
pp. 299-311 ◽  
Author(s):  
Chun-Yang Cheng ◽  
Ya-Chu Yang ◽  
Yi-Zhen Zhong ◽  
Yang-Yuan Chen ◽  
Tung Hsu ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Physical Metallurgy ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Low Entropy

Effect of Annealing Treatment on the Microstructure and Magnetic Properties of FeSiBAlNi(C, Ce) High Entropy Alloys

2016 ◽  
Vol 849 ◽  
pp. 52-57 ◽  
Author(s):  
Jing Xu ◽  
Zheng Feng Zhao ◽  
Yan Wang
Keyword(s):  
Magnetic Properties ◽  
Amorphous Phase ◽  
Annealing Treatment ◽  
Particle Morphology ◽  
High Entropy Alloys ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
High Entropy ◽  
Temperature Range ◽  
Microstructure And Magnetic Properties

In this paper, the effects of annealing treatment on the microstructure, thermal property and magnetic properties of mechanical alloyed FeSiBAlNiC and FeSiBAlNiCe amorphous high entropy alloys has been systematically investigated using X-ray diffraction, differential scanning calorimetry, field emission scanning electron microscopy and alternation gradient magnetometry. The results showed that annealing at different temperature range induced the pronounced microstructural evolution from the amorphous phase to a mixture of amorphous phase and intermetallics but without any formation of solid solutions. In addition, the thermal stability and heat resistance were enhanced with increasing the annealing temperature. Similarly, annealing treatment also had significant effect on the particle morphology, making the particles evolve from near-round shape to plate-like shape. Furthermore, subsequent annealing of W6-Ce amorphous HEAs enhanced the saturation magnetization (Ms) remarkably (from 0.6 emu/g of 140 h as-milled W6-Ce to 20.17 emu/g). But for the Ms values of the 140 h as-milled amorphous W6-C HEAs, annealing in different temperature range all exhibited a slightly decreased effect.

Understanding Disordered Multicomponent Solid Solutions or High Entropy Alloys Using X-Ray Diffraction

2020 ◽  
pp. 329-354
Author(s):  
Anandh Subramaniam ◽  
Rameshwari Naorem ◽  
Anshul Gupta ◽  
Sukriti Mantri ◽  
K.V. Mani Krishna ◽  
...  
Keyword(s):  
Solid Solutions ◽  
High Entropy Alloys ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Entropy

FCC and BCC equivalents in as-cast solid solutions of AlxCoyCrzCu0.5FevNiw high-entropy alloys

2006 ◽  
Vol 31 (6) ◽  
pp. 669-684 ◽  
Author(s):  
Guan-Yu Ke ◽  
Guan-Yu Chen ◽  
Tung Hsu ◽  
Jien-Wei Yeh
Keyword(s):  
Solid Solutions ◽  
High Entropy Alloys ◽  
High Entropy

Structural and Microstructural Characterization of CoCrFeNiPd High Entropy Alloys

2016 ◽  
Vol 257 ◽  
pp. 72-75 ◽  
Author(s):  
Monique Calvo-Dahlborg ◽  
Juan Cornide ◽  
Ulf Dahlborg ◽  
Sylvain Chambreland ◽  
Gareth D. Hatton ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Microstructural Characterization ◽  
High Entropy Alloy ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Equimolar Composition

According to literature, a High Entropy Alloy (HEA) has close to equimolar composition and forms mostly fcc and/or bcc phases as well as solid solutions, i.e. the elements take random occupations on available lattice sites. In this paper we report studies on HEAs of the CoCrFeNiPd system. All alloys have been found to, contrary to what has been reported earlier in literature, consist of four different phases, three of them of fcc type. The relative amounts of the different phases depend on Pd concentration. The different phases seem to be fully interconnected.

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