scholarly journals Designing TiVNbTaSi refractory high-entropy alloys with ambient tensile ductility

2022 ◽  
Vol 206 ◽  
pp. 114230
Author(s):  
Z.Q. Xu ◽  
Z.L. Ma ◽  
Y. Tan ◽  
X.W. Cheng
Keyword(s):  
Tensile Ductility ◽  
High Entropy Alloys ◽  
High Entropy

scholarly journals Natural-mixing guided design of refractory high-entropy alloys with as-cast tensile ductility

2020 ◽  
Vol 19 (11) ◽  
pp. 1175-1181 ◽  
Author(s):  
Shaolou Wei ◽  
Sang Jun Kim ◽  
Jiyun Kang ◽  
Yong Zhang ◽  
Yongjie Zhang ◽  
...  
Keyword(s):  
Tensile Ductility ◽  
High Entropy Alloys ◽  
High Entropy

Grain-anisotropied high-strength Ni6Cr4WFe9Ti high entropy alloys with outstanding tensile ductility

2019 ◽  
Vol 767 ◽  
pp. 138382
Author(s):  
Xigang Yang ◽  
Yun Zhou ◽  
Shengqi Xi ◽  
Zhen Chen ◽  
Pei Wei ◽  
...  
Keyword(s):  
Tensile Ductility ◽  
High Strength ◽  
High Entropy Alloys ◽  
High Entropy

Mechanical Properties and Structures of High Entropy Alloys and Bulk Metallic Glasses Composites

2010 ◽  
Vol 654-656 ◽  
pp. 1058-1061 ◽  
Author(s):  
Yong Zhang
Keyword(s):  
Mechanical Properties ◽  
Metallic Glasses ◽  
Tensile Ductility ◽  
Bulk Metallic Glasses ◽  
Phase Changes ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Structural Applications ◽  
Bridgman Solidification ◽  
Packing Efficiency

Bulk metallic glasses (BMGs) and high entropy alloys (HEAs) have unique structures at the length scales of micro- and nano-metre, and exhibit unique properties, which make them potential materials for structural applications. The tensile ductility of dendrite/BMG composites can be greatly improved by Bridgman solidification. The BCC structured HEA with a composition of Ti0.5AlCoCrFeNi exhibits ultrahigh fracture strength which is competitive to most of the BMGs, moreover, the strength can be sustained at high temperatures. The phase changes of HEAs are closely related to the atomic packing efficiency (APE).

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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