Effect of Alloying Elements on the Hydrogen Diffusion and Trapping in High Entropy Alloys

2021 ◽  
Author(s):  
Sara Correa Marques ◽  
Amanda Ventura Castilho ◽  
Dilson Silva dos Santos
Keyword(s):  
Hydrogen Diffusion ◽  
Alloying Elements ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Effect Of Alloying

Machine learning assisted design of FeCoNiCrMn high-entropy alloys with ultra-low hydrogen diffusion coefficients

2021 ◽  
pp. 117535
Author(s):  
Xiao-Ye Zhou ◽  
Ji-Hua Zhu ◽  
Yuan Wu ◽  
Xu-Sheng Yang ◽  
Turab Lookman ◽  
...  
Keyword(s):  
Machine Learning ◽  
Diffusion Coefficients ◽  
Hydrogen Diffusion ◽  
High Entropy Alloys ◽  
High Entropy

Solid State Manufacture of High Entropy Alloys-Preliminary Studies

MRS Advances ◽  
2017 ◽  
Vol 2 (26) ◽  
pp. 1375-1380 ◽  
Author(s):  
M B D Ellis ◽  
G R Doughty
Keyword(s):  
Solid State ◽  
High Performance ◽  
Alloying Elements ◽  
Liquid Density ◽  
High Entropy Alloys ◽  
Next Generation ◽  
Molten Salt Electrolysis ◽  
High Entropy ◽  
State Diffusion ◽  
Environmentally Friendly Process

AbstractFor the past ten years Metalysis have produced tantalum, titanium and titanium alloy powders for high performance applications using their solid state salt electrolysis process. This low energy and environmentally friendly process is now being used to manufacture the next generation of High Entropy Alloys (HEAs).In most cases the manufacture of HEAs involves high temperatures which put all of the alloying elements into the liquid phase. This can lead to numerous problems and restrict the number of HEAs which can be made, particularly the alloys where one needs to combine low melting point elements with refractory elements and also where there are significant liquid density differences between the constituents causing melt segregation.The aim is to present the preliminary work carried out by Metalysis and to show how the solid state diffusion process based on molten salt electrolysis lends itself to the industrial scale manufacture of the next generation of HEAs. This study will focus on the HEAs whose constituent alloying elements have large differences in both their melting points and liquid densities, for example, chromium, niobium, tantalum, titanium and aluminum.

Influence of alloying elements on mechanical and electronic properties of NbMoTaWX (X = Cr, Zr, V, Hf and Re) refractory high entropy alloys

2020 ◽  
Vol 126 ◽  
pp. 106928
Author(s):  
Yonggang Tong ◽  
Linhui Bai ◽  
Xiubing Liang ◽  
Yongxiong Chen ◽  
Zhibing Zhang ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Alloying Elements ◽  
High Entropy Alloys ◽  
High Entropy

Effect of alloying on the thermal-elastic properties of 3d high-entropy alloys

2018 ◽  
Vol 210 ◽  
pp. 320-326 ◽  
Author(s):  
Huijuan Ge ◽  
Hongquan Song ◽  
Jiang Shen ◽  
Fuyang Tian
Keyword(s):  
Elastic Properties ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Effect Of Alloying

scholarly journals Effect of Sn and Mo on Microstructure and Electrochemical Property of TiZrTaNb High Entropy Alloys

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1527
Author(s):  
Qiaoyu Li ◽  
Tengfei Ma ◽  
Yuliang Jin ◽  
Xiaohong Wang ◽  
Duo Dong ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Dendritic Structure ◽  
Optical Microscope ◽  
Alloying Elements ◽  
High Entropy Alloy ◽  
Corrosion Mechanism ◽  
High Entropy Alloys ◽  
Corrosion Properties ◽  
Corrosion Morphology ◽  
High Entropy

The effects of Sn and Mo alloying elements on the microstructure and electrochemical properties of TiZrTaNb high entropy alloys were studied by optical microscope (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and electrochemistry. TiZrTaNb, TiZrTaNbMo and TiZrTaNbSn alloys with equal atomic ratio were prepared by the arc melting method. The results showed that the microstructure of the high entropy alloys was dendritic structure with single BCC structure. The addition of Mo and Sn elements promoted the growth of the dendritic structure and accelerated the interdendritic segregation of the TiZrTaNb alloy. The TiZrTaNbMo alloy exhibited excellent corrosion properties compared to TiZrTaNb and TiZrTaNbSn alloys based on corrosion parameters Icorr, φcorr, Ipass. The corrosion mechanism is discussed based on the corrosion morphology. The alloying elements have an important effect on the microstructure and electrochemical properties of a high entropy alloy.

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