Revealing the Selection of σ and μ Phases in CoCrFeNiMox High Entropy Alloys by CALPHAD

2018 ◽  
Vol 39 (4) ◽  
pp. 446-453 ◽  
Author(s):  
Qingfeng Wu ◽  
Zhijun Wang ◽  
Feng He ◽  
Junjie Li ◽  
Jincheng Wang
Keyword(s):  
High Entropy Alloys ◽  
High Entropy ◽  
Selection Of

Selection of High Entropy Alloy for Solid Solution Using Multi-Criteria Decision Making Tool

2019 ◽  
Vol 969 ◽  
pp. 466-471
Author(s):  
Vinay Kumar Soni ◽  
Shubhashis Sanyal ◽  
Sudip Kumar Sinha
Keyword(s):  
Solid Solution ◽  
Vital Role ◽  
Size Difference ◽  
High Entropy Alloy ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Atomic Size Difference ◽  
Topological Parameter ◽  
Topsis Technique ◽  
Selection Of

High entropy alloys (HEA’s) have found a very special place in aerospace industries due to their property of forming solid solution. In past literatures on high entropy alloys, it is established that parameters like atomic size difference (), topological parameter (Ω) and electro-negativity difference (∆) plays a vital role in deciding whether solid solution will be formed or not. Therefore, the present study deals with the selection of optimal high entropy composition based on the three parameters δ, Ω and with the help of TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution). Ranking is done for 38 HEA different compositions such that the first rank represents the HEA which is most likely to form solid solution. The study reveals that TOPSIS method can be successfully implemented to predict the formation of solid solution in HEA’s.

The effect of Ti addition on phase selection of CoCrCu0.5FeNi high-entropy alloys

2017 ◽  
Vol 34 (4) ◽  
pp. 473-479 ◽  
Author(s):  
W. D. Du ◽  
N. Liu ◽  
Z. Peng ◽  
P. J. Zhou ◽  
H. F. Xiang ◽  
...  
Keyword(s):  
High Entropy Alloys ◽  
Phase Selection ◽  
High Entropy ◽  
Ti Addition ◽  
Selection Of

scholarly journals Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

2021 ◽  
Vol 13 (18) ◽  
pp. 10217
Author(s):  
Radu Nartita ◽  
Daniela Ionita ◽  
Ioana Demetrescu
Keyword(s):  
Corrosion Inhibitors ◽  
Raw Materials ◽  
Metallic Alloys ◽  
Advanced Materials ◽  
Special Focus ◽  
High Entropy Alloys ◽  
Future Perspectives ◽  
High Entropy ◽  
Green Corrosion Inhibitors ◽  
Selection Of

Starting with a description of the meaning of sustainable coating nowadays, this review presents a selection of methods for sustainable coatings manufacture using raw materials, saving energy and costs. This selection creates an introduction for the coatings performances of intensively investigated coated alloys and their multifunctionality. There are many examples and EU recommendations to be discussed, and we especially chose to introduce sustainable coatings with both industrial and medical functions, such as bioinspired films and coatings on high-entropy alloys, biodegradable metallic alloys, etc. A special focus is on nanotechnology and nanomaterials in green procedures, enhancing coatings’ multifunctionality, introducing green corrosion inhibitors, smart additives, and coatings based on superhydrophobicity. The conclusions and future perspectives of sustainable and multifunctional coatings, as expressions of sustainable advanced materials, are based on important motivations of such studies.

Phase prediction in high entropy alloys with a rational selection of materials descriptors and machine learning models

2020 ◽  
Vol 185 ◽  
pp. 528-539 ◽  
Author(s):  
Yan Zhang ◽  
Cheng Wen ◽  
Changxin Wang ◽  
Stoichko Antonov ◽  
Dezhen Xue ◽  
...  
Keyword(s):  
Machine Learning ◽  
High Entropy Alloys ◽  
Learning Models ◽  
Rational Selection ◽  
High Entropy ◽  
Phase Prediction ◽  
Machine Learning Models ◽  
Selection Of

High-Entropy Alloys as Catalysts for the CO2 and CO Reduction Reactions

2019 ◽  
Author(s):  
Jack Pedersen ◽  
Thomas Batchelor ◽  
Alexander Bagger ◽  
Jan Rossmeisl
Keyword(s):  
Density Functional ◽  
Rational Design ◽  
Hydrogen Adsorption ◽  
Co Adsorption ◽  
Reduction Reaction ◽  
Supervised Machine Learning ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Co Reduction ◽  
Disordered Alloy

Using the high-entropy alloys (HEAs) CoCuGaNiZn and AgAuCuPdPt as starting points we provide a framework for tuning the composition of disordered multi-metallic alloys to control the selectivity and activity of the reduction of carbon dioxide (CO2) to highly reduced compounds. By combining density functional theory (DFT) with supervised machine learning we predicted the CO and hydrogen (H) adsorption energies of all surface sites on the (111) surface of the two HEAs. This allowed an optimization for the HEA compositions with increased likelihood for sites with weak hydrogen adsorption{to suppress the formation of molecular hydrogen (H2) and with strong CO adsorption to favor the reduction of CO. This led to the discovery of several disordered alloy catalyst candidates for which selectivity towards highly reduced carbon compounds is expected, as well as insights into the rational design of disordered alloy catalysts for the CO2 and CO reduction reaction.

Effect of the structure of vacuum condensates of high entropy alloys of Cr–Fe–Co–Ni–Cu system on their mechanical properties

2020 ◽  
Vol 2020 (4) ◽  
pp. 16-22
Author(s):  
A.I. Ustinov ◽  
◽  
V.S. Skorodzievskii ◽  
S.A. Demchenkov ◽  
S.S. Polishchuk ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Vacuum Condensates
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