| 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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Greaves, G.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2021<i>In situ</i> He<SUP>+</SUP> irradiation of the double solid solution (Ti<sub>0.5</sub>,Zr<sub>0.5</sub>)<sub>2</sub>(Al<sub>0.5</sub>,Sn<sub>0.5</sub>)C MAX phase: Defect evolution in the 350-800 °C temperature rangecitations
- 2019Chemical effects on He bubble superlattice formation in high entropy alloyscitations
- 2019A candidate accident tolerant fuel system based on a highly concentrated alloy thin filmcitations
- 2019Intermetallic Re phases formed in ion irradiated WRe alloycitations
- 2019New Microscope and Ion Accelerators for Materials Investigations (MIAMI-2) system at the University of Huddersfieldcitations
- 2017Effect of He implantation on the microstructure of zircaloy-4 studied using in situ TEMcitations
- 2016Hybrid glasses from strong and fragile metal-organic framework liquids.citations
- 2014Helium bubble formation in nuclear glass by in-situ TEM ion implantationcitations
- 2014Kink Band Formation in Graphite under Ion Irradiation at 100 and 298Kcitations
- 2012A transmission electron microscopy study of inert gases in silicon and iron
Places of action
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article
Chemical effects on He bubble superlattice formation in high entropy alloys
Abstract
The probable formation mechanism of He bubble superlattices relies on long range anisotropic diffusion of self-interstitial atoms (SIAs). Here we study He ion irradiation of pure Ni and two equiatomic concentrated solid-solution alloys (CSAs) of FeNi and FeCrNiCo. It is expected from the significantly reduced diffusion of SIAs in CSAs, including high entropy alloys (HEAs), that long range anisotropic SIA migration cannot be active. We report the formation of a He bubble lattice in pure Ni, and for the first time in FeNi and FeCrNiCo systems under 30 keV He ion irradiation at room temperature. The ion dose and flux required to form a bubble superlattice increase with chemical complexity. Comparing to Ni, SIA clusters change directions more frequently due to anisotropic elementally-biased diffusion from the high degree of chemical non-homogeneity in CSAs. Nevertheless, anisotropic 1-D diffusion of interstitial defects is possible in these complex alloys over incrementally longer time scales and irradiation doses. The sluggish diffusion, characteristic in CSAs, leads to smaller superlattice parameter and smaller bubble diameters. The chemical biased SIA diffusion and its effects on He evolution revealed here have important implications on understanding and improving radiation tolerance over a wide range of extreme conditions.