scholarly journals Concurrence of spinodal decomposition and nano-phase precipitation in a multi-component AlCoCrCuFeNi high-entropy alloy

2019 ◽  
Vol 8 (1) ◽  
pp. 726-736 ◽  
Author(s):  
Yue Zhang ◽  
Zheng Chen ◽  
Dongdong Cao ◽  
Jinyong Zhang ◽  
Ping Zhang ◽  
...  
Keyword(s):  
Spinodal Decomposition ◽  
High Entropy Alloy ◽  
Phase Precipitation ◽  
High Entropy

Segregation-driven grain boundary spinodal decomposition as a pathway for phase nucleation in a high-entropy alloy

2019 ◽  
Vol 178 ◽  
pp. 1-9 ◽  
Author(s):  
Linlin Li ◽  
Zhiming Li ◽  
Alisson Kwiatkowski da Silva ◽  
Zirong Peng ◽  
Huan Zhao ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Spinodal Decomposition ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Phase Nucleation

scholarly journals Spinodal Decomposition and Mechanical Response of a TiZrNbTa High-Entropy Alloy

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3508 ◽  
Author(s):  
Liu ◽  
Huang ◽  
Chuang ◽  
Chou ◽  
Wei ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Spinodal Decomposition ◽  
Mechanical Response ◽  
Cast Alloy ◽  
High Entropy Alloy ◽  
Body Centered Cubic ◽  
High Entropy ◽  
Bcc Structure ◽  
20 Nm ◽  
Interconnected Structure

In this study, the effects of spinodal decomposition on the microstructures and mechanical properties of a TiZrNbTa alloy are investigated. The as-cast TiZrNbTa alloy possesses dual phases of TiZr-rich inter-dendrite (ID) and NbTa-rich dendrite (DR) domains, both of which have a body-centered cubic (BCC) structure. In the DRs of the as-cast alloy, the α and ω precipitates are found to be uniformly distributed. After homogenization at 1100 °C for 24 h followed by water quenching, spinodal decomposition occurs and an interconnected structure with a wavelength of 20 nm is formed. The α and ω precipitates remained in the structure. Such a fine spinodal structure strengthens the alloy effectively. Detailed strengthening calculations were conducted in order to estimate the strengthening contributions from the α and ω precipitates, as well as the spinodal decomposition microstructure.

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

Ultrastrong Duplex High-Entropy Alloy with 2 GPa Cryogenic Strength Enabled by an Accelerated Martensitic Transformation

2019 ◽  
Author(s):  
Dong Geun Kim ◽  
Yong Hee Jo ◽  
Junha Yang ◽  
Won-Mi Choi ◽  
Hyoung Seop Kim ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
High Entropy Alloy ◽  
High Entropy
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