scholarly journals Hydrogen embrittlement of additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy

2022 ◽  
Vol 195 ◽  
pp. 110007
Author(s):  
Di Wan ◽  
Shuai Guan ◽  
Dong Wang ◽  
Xu Lu ◽  
Jun Ma
Keyword(s):  
Hydrogen Embrittlement ◽  
High Entropy Alloy ◽  
High Entropy

scholarly journals Synthesis of Spherical V-Nb-Mo-Ta-W High-Entropy Alloy Powder Using Hydrogen Embrittlement and Spheroidization by Thermal Plasma

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1296 ◽  
Author(s):  
Won-Hyuk Lee ◽  
Ki Beom Park ◽  
Kyung-Woo Yi ◽  
Sung Yong Lee ◽  
Kwangsuk Park ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Thermal Plasma ◽  
Fine Powder ◽  
Hydrogen Atmosphere ◽  
Vacuum Arc ◽  
Cubic Phase ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Inductively Coupled ◽  
Arc Melting

V-Nb-Mo-Ta-W high-entropy alloy (HEA), one of the refractory HEAs, is considered as a next-generation structural material for ultra-high temperature uses. Refractory HEAs have low castability and machinability due to their high melting temperature and low thermal conductivity. Thus, powder metallurgy becomes a promising method for fabricating components with refractory HEAs. Therefore, in this study, we fabricated spherical V-Nb-Mo-Ta-W HEA powder using hydrogen embrittlement and spheroidization by thermal plasma. The HEA ingot was prepared by vacuum arc melting and revealed to have a single body-centered cubic phase. Hydrogen embrittlement which could be achieved by annealing in a hydrogen atmosphere was introduced to get the ingot pulverized easily to a fine powder having an angular shape. Then, the powder was annealed in a vacuum atmosphere to eliminate the hydrogen from the hydrogenated HEA, resulting in a decrease in the hydrogen concentration from 0.1033 wt% to 0.0003 wt%. The angular shape of the HEA powder was turned into a spherical one by inductively-coupled thermal plasma, allowing to fabricate spherical V-Nb-Mo-Ta-W HEA powder with a d50 value of 28.0 μm.

Influence of pre-strain on the gaseous hydrogen embrittlement resistance of a high-entropy alloy

2018 ◽  
Vol 718 ◽  
pp. 43-47 ◽  
Author(s):  
Yakai Zhao ◽  
Dong-Hyun Lee ◽  
Woo-Jin Kim ◽  
Moo-Young Seok ◽  
Ju-Young Kim ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Gaseous Hydrogen ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Embrittlement Resistance ◽  
Hydrogen Embrittlement Resistance

Ultrahigh-strength CoCrFeMnNi high-entropy alloy wire rod with excellent resistance to hydrogen embrittlement

2018 ◽  
Vol 732 ◽  
pp. 105-111 ◽  
Author(s):  
Young Jin Kwon ◽  
Jong Woo Won ◽  
Sung Hyuk Park ◽  
Jeong Hun Lee ◽  
Ka Ram Lim ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
High Entropy Alloy ◽  
Alloy Wire ◽  
High Entropy ◽  
Wire Rod ◽  
Ultrahigh Strength

Immunity of Al0.25CoCrFeNi high-entropy alloy to hydrogen embrittlement

2021 ◽  
pp. 141590
Author(s):  
Shidong Zhang ◽  
Min Liu ◽  
Yun Luo ◽  
Lianbo Wang ◽  
Zemin Wang ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
High Entropy Alloy ◽  
High Entropy

Effect of hydrogen charging time on hydrogen embrittlement of CoCrFeMnNi high-entropy alloy

2021 ◽  
pp. 110073
Author(s):  
Xinfeng Li ◽  
Zheng Feng ◽  
Xiaolong Song ◽  
Yanfei Wang ◽  
Yong Zhang
Keyword(s):  
Hydrogen Embrittlement ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Hydrogen Charging ◽  
Charging Time

Strong resistance to hydrogen embrittlement of high-entropy alloy

2018 ◽  
Vol 736 ◽  
pp. 156-166 ◽  
Author(s):  
Z. Pu ◽  
Y. Chen ◽  
L.H. Dai
Keyword(s):  
Hydrogen Embrittlement ◽  
High Entropy Alloy ◽  
High Entropy

Role of Hydrogen and Temperature in Hydrogen Embrittlement of Equimolar CoCrFeMnNi High-entropy Alloy

2020 ◽  
Author(s):  
Junghoon Lee ◽  
Hanji Park ◽  
Myeonghyun Kim ◽  
Han-Jin Kim ◽  
Jin-yoo Suh ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
High Entropy Alloy ◽  
High Entropy

Resistance of CoCrFeMnNi high-entropy alloy to gaseous hydrogen embrittlement

2017 ◽  
Vol 135 ◽  
pp. 54-58 ◽  
Author(s):  
Yakai Zhao ◽  
Dong-Hyun Lee ◽  
Moo-Young Seok ◽  
Jung-A Lee ◽  
M.P. Phaniraj ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Gaseous Hydrogen ◽  
High Entropy Alloy ◽  
High Entropy
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