High irradiation resistance of nanocrystalline W-based high entropy alloy

2019 ◽  
Author(s):  
Osman El Atwani ◽  
Enrique Martinez Saez ◽  
Nan Li ◽  
Jon Kevin Scott Baldwin ◽  
Stuart Andrew Maloy ◽  
...  
Keyword(s):  
High Entropy Alloy ◽  
High Entropy ◽  
High Irradiation ◽  
Irradiation Resistance

High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS

2019 ◽  
Vol 35 (3) ◽  
pp. 300-305 ◽  
Author(s):  
Lixin Yang ◽  
Hualong Ge ◽  
Jian Zhang ◽  
Ting Xiong ◽  
Qianqian Jin ◽  
...  
Keyword(s):  
Ion Irradiation ◽  
High Entropy Alloy ◽  
Comparison Study ◽  
High Entropy ◽  
Irradiation Resistance

scholarly journals The atomistic insights of chemical complexity effect on irradiation resistance of high entropy alloys

2022 ◽  
Author(s):  
Lingyun Qian ◽  
Honggang Bao ◽  
Rui Li ◽  
Qing Peng
Keyword(s):  
Nuclear Structure ◽  
Single Phase ◽  
High Entropy Alloys ◽  
Next Generation ◽  
High Entropy ◽  
Chemical Complexity ◽  
High Irradiation ◽  
Irradiation Resistance

High irradiation tolerance is a key feature required for designing the nuclear structure materials for the next generation reactors, where high entropy alloys and equiatomic multicomponent single-phase alloys are good...

Effect of He on the irradiation resistance of equiatomic CoCrFeMnNi high-entropy alloy

2022 ◽  
pp. 153525
Author(s):  
S.S. Huang ◽  
H.Q. Guan ◽  
Z.H. Zhong ◽  
M. Miyamoto ◽  
Q. Xu
Keyword(s):  
High Entropy Alloy ◽  
High Entropy ◽  
Irradiation Resistance

scholarly journals Irradiation resistance mechanism of the CoCrFeMnNi equiatomic high-entropy alloy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Q. Xu ◽  
H. Q. Guan ◽  
Z. H. Zhong ◽  
S. S. Huang ◽  
J. J. Zhao
Keyword(s):  
Binding Energy ◽  
High Speed ◽  
Vacancy Cluster ◽  
High Energy ◽  
Stacking Fault ◽  
High Entropy Alloy ◽  
Face Centered Cubic ◽  
High Entropy ◽  
Vacancy Clusters ◽  
Irradiation Resistance

AbstractWhen face-centered cubic (FCC) metals and alloys with low stacking fault energy (SFE) are irradiated by high-energy particles or deformed at high speed, stacking fault tetrahedra (SFTs), which are a type of vacancy cluster defect, are often formed. Therefore, SFTs were expected to form in the CoCrFeMnNi equiatomic high-entropy alloy (HEA). However, no SFT was observed in the CoCrFeMnNi HEA with high-speed plastic deformation even after annealing at 873 K. To elucidate this mechanism, the binding energy of vacancy clusters in the CoCrFeMnNi HEA was calculated based on first principles. The binding energy of the di-vacancy cluster was positive (average of 0.25 eV), while that of the tri-vacancy cluster was negative (average of − 0.44 eV), suggesting that the possibility of formation of a tri-vacancy cluster was low. The inability to form a cluster containing three vacancies is attributed to the excellent irradiation resistance of the CoCrFeMnNi HEA. However, if an extra vacancy is added to a tri-vacancy cluster (with negative binding energy), the binding energy of the subsequent tetra-vacancy cluster may become positive. This suggests that it is possible to form vacancy clusters in the CoCrFeMnNi HEA when high-energy ion or neutron irradiation causes cascade damage.

Instant and Persistent Hydrogen Production Using Nano High Entropy Catalyst

2019 ◽  
Author(s):  
Nirmal Kumar ◽  
Subramanian Nellaiappan ◽  
Ritesh Kumar ◽  
Kirtiman Deo Malviya ◽  
K. G. Pradeep ◽  
...  
Keyword(s):  
Formic Acid ◽  
Minimum Energy ◽  
High Entropy Alloy ◽  
Hydrogen Energy ◽  
High Entropy ◽  
Electro Oxidation ◽  
The Individual ◽  
Novel Catalyst ◽  
Cell Anode ◽  
Fuel Cell Anode

<div>Renewable harvesting clean and hydrogen energy using the benefits of novel multicatalytic materials of high entropy alloy (HEA equimolar Cu-Ag-Au-Pt-Pd) from formic acid with minimum energy input has been achieved in the present investigation. The synthesis effect of pristine elements in the HEA drives the electro-oxidation reaction towards non-carbonaceous pathway . The atomistic simulation based on DFT rationalize the distinct lowering of the d-band center for the individual atoms in the HEA as compared to the pristine counterparts. This catalytic activity of the HEA has also been extended to methanol electro-oxidation to show the unique capability of the novel catalyst. The nanostructured HEA, properties using a combination of casting and cry omilling techniques can further be utilized as fuel cell anode in direct formic acid/methanol fuel cells (DFFE).<br></div>

Complex magnetism and magnetoresistance of Gd-Tb-Dy-Ho-Lu hexagonal high-entropy alloy

2018 ◽  
Author(s):  
Janez Dolinšek ◽  
Stanislav Vrtnik ◽  
J. Lužnik ◽  
P. Koželj ◽  
M. Feuerbacher
Keyword(s):  
High Entropy Alloy ◽  
High Entropy

Recent progress in multi-element alloy and nitride coatings sputtered from high-entropy alloy targets

2006 ◽  
Vol 31 (6) ◽  
pp. 723-736 ◽  
Author(s):  
Keng-Hao Cheng ◽  
Chia-Han Lai ◽  
Su-Jien Lin ◽  
Jien-Wei Yeh
Keyword(s):  
Recent Progress ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Nitride Coatings
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