Results 31 to 40 of about 6,572 (196)

Senary Refractory High-Entropy Alloy HfNbTaTiVZr

Metallurgical and Materials Transactions A, 2015
Discovery of new single-phase high-entropy alloys (HEAs) is important to understand HEA formation mechanisms. The present study reports computational design and experimental validation of a senary HEA, HfNbTaTiVZr, in a body-centered cubic structure. The phase diagrams and thermodynamic properties of this senary system were modeled using the CALPHAD ...
M. C. Gao, B. Zhang, S. Yang, S. M. Guo
openaire   +2 more sources

Research Progress of Refractory High Entropy Alloys: A Review

Chinese Journal of Mechanical Engineering, 2022
Owing to superior comprehensive performance than conventional superalloys at high temperature, refractory high entropy alloy (RHEA) is becoming a promising candidate for the next generation high-temperature material.
Xiaochang Xie, Neng Li, Wei Liu, Shuai Huang, Xiaoyong He, Qiuying Yu, Huaping Xiong, Enhui Wang, Xinmei Hou   +8 more
doaj   +1 more source

A comprehensive review on the deformation behavior of refractory high entropy alloys at elevated temperatures

Manufacturing Review, 2023
Thermo-mechanical processing of refractory high entropy alloys (RHEAs) at high temperatures is very important. It is an effective method of modifying the microstructure, properties, and shaping into final components after casting.
Bamisaye Olufemi Sylvester, Maledi Nthabiseng, Van der Merwe Josias, Klenam Desmond Edem Primus, Bodunrin Michael Oluwatosin, Akinwekomi Akeem Damilola   +5 more
doaj   +1 more source

Microstructure and mechanical properties of sintered and heat-treated HfNbTaTiZr high entropy alloy [PDF]

, 2019
High entropy alloys (HEAs) have attracted researchers' interest in recent years. The aim of this work was to prepare the HfNbTaTiZr high entropy alloy via the powder metallurgy process and characterize its properties.
Kocich, Radim, Kunčická, Lenka, Lukáč, František, Málek, Jaroslav, Zýka, Jiří, Čížek, Jakub   +5 more
core   +1 more source

Heat storage in alloy transformations [PDF]

, 1981
The feasibility of using metal alloys as thermal energy storage media was determined. The following major elements were studied: (1) identification of congruently transforming alloys and thermochemical property measurements; (2) development of a precise ...
Birchenall, C. E., Farkas, D., Gueceri, S. I., Labdon, M. B., Nagaswami, N., Pregger, B.   +5 more
core   +2 more sources

Ta-Nb-Mo-W refractory high-entropy alloys: anomalous ordering behavior and its intriguing electronic origin [PDF]

, 2018
From electronic-structure-based thermodynamic linear-response, we establish chemical ordering behavior in complex solid solutions versus how Gibbs' space is traversed -- applying it on prototype refractory A2 Ta-Nb-Mo-W high-entropy alloys.
Johnson, Duane, Johnson, Duane, Singh, Prashant, Smirnov, Andrei   +3 more
core   +4 more sources

First-Principles Design of Refractory High Entropy Alloy VMoNbTaW [PDF]

Entropy, 2018
The elastic properties of seventy different compositions were calculated to optimize the composition of a V–Mo–Nb–Ta–W system. A new model called maximum entropy approach (MaxEnt) was adopted. The influence of each element was discussed. Molybdenum (Mo) and tungsten (W) are key elements for the maintenance of elastic properties. The V–Mo–Nb–Ta–W system
Zheng, Shumin, Wang, Shaoqing
openaire   +3 more sources

Influence of the thermal factor on the composition of electron-beam high-entropy ALTiVCrNbMo coatings [PDF]

, 2009
This paper reports results of studying the element and phase compositions of electron-beam coatings based on the high-entropy alloy AlTiVCrNbMo, depending on the deposition temperature (in the range of 300...700 °С).
Sobol, O. V., Barmin, A. E., Hryhorieva, S. V., Gorban, V. F., Vuets, A. E., Subbotin, A. V.   +5 more
core   +2 more sources

Enhanced Strength of a Mechanical Alloyed NbMoTaWVTi Refractory High Entropy Alloy [PDF]

Materials, 2018
A NbMoTaWVTi refractory high entropy alloy (HEA) has been successfully synthesized by mechanical alloying (MA) and spark plasma sintering (SPS). The microstructure and mechanical properties of this alloy are investigated. It is observed that only two types of body-centered cubic (BCC) solid solutions are formed in the powders after ball milling for 40 ...
Long, Yan, Su, Kai, Zhang, Jinfu, Liang, Xiaobiao, Peng, Haiyan, Li, Xiaozhen   +5 more
openaire   +2 more sources

Tuning phase-stability and short-range order through Al-doping in (CoCrFeMn)100-xAlx high entropy alloys [PDF]

, 2019
For (CoCrFeMn)$_{100-x}$Al$_{x}$ high-entropy alloys, we investigate the phase evolution with increasing Al-content (0 $\le$ x $\le$ 20 at.%). From first-principles theory, the Al-doping drives the alloy structurally from FCC to BCC separated by a narrow
Balasubramanian, Ganesh, Balasubramanian, Ganesh, Johnson, Duane, Johnson, Duane, Marshal, Amalraj, Pradeep, K. G., Sharma, Aayush, Singh, Prashant, Smirnov, A. V.   +8 more
core   +4 more sources