| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gurao, N. P.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Novel Alloy Design Concepts Enabling Enhanced Mechanical Properties of High Entropy Alloyscitations
- 2022Elastic and plastic anisotropy in a refractory high entropy alloy utilizing combinatorial instrumented indentation and electron backscatter diffractioncitations
- 2022Heterogeneous microstructure in nonequiatomic MoNbTaVW refractory high entropy alloy after high pressure torsion: Evolution mechanisms and mechanical propertiescitations
- 2021A mechanistic perspective on the kinetics of plastic deformation in FCC High Entropy Alloys: Effect of strain, strain rate and temperaturecitations
- 2020A critical evaluation of microstructure-texture-mechanical behavior heterogeneity in high pressure torsion processed CoCuFeMnNi high entropy alloycitations
- 2019ICME approach to explore equiatomic and non-equiatomic single phase BCC refractory high entropy alloyscitations
- 2011Microstructure evolution and hardness variation during annealing of equal channel angular pressed ultra-fine grained nickel subjected to 12 passescitations
- 2008Grain size and grain boundary character distribution in ultra-fine grained (ECAP) nickelcitations
Places of action
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article
ICME approach to explore equiatomic and non-equiatomic single phase BCC refractory high entropy alloys
Abstract
High entropy alloys made from refractory metals, commonly known as refractory high entropy alloys (RHEAs) are potential candidates for high-temperature applications beyond the temperature regime (>1873 K) of conventional nickel based super alloys. In the present investigation, integrated computational materials engineering (ICME) framework consisting of detailed CALPHAD (CALculation of PHase Diagram) modeling and experimental investigation have been carried out to design both equiatomic and non-equiatomic RHEA composition exhibiting thermodynamically stable single-phase BCC/B2 solid solution. Starting with 126 equiatomic compositions, the CALPHAD calculations reveal only two equiatomic (MoNbTaVW and CrMoReVW) alloys having single phase BCC solid solution at 1000K. Further, low temperature (1000–400 K) CALPHAD assessment on 2902 non-equiatomic alloys reveal the formation of 54 single phase RHEAs based on MoNbTaVW at 400 K and 86 single phase RHEAs based on CrMoReVW at 800 K. In order to validate the CALPHAD predictions, one equiatomic, one non-equiatomic CrMoReVW alloy and six non-equiatomic MoNbTaVW alloys were synthesized and characterized using X-Ray diffraction, scanning electron microscopy and transmission electron microscopy. All of them show single phase solid solution with an excellent combination of microhardness (5.33–17.64 GPa) and elastic modulus (188–474 GPa) thus proving high fidelity of the CALPHAD approach in predicting phase stability of HEAs. To summarize, ICME approach involving CALPHAD modeling aids in accelerated design and development of existing RHEAs and discover new RHEAs showing potential for high-temperature applications.