| 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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Domain, Christophe
Red Española de Supercomputación
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Physical insight into interactions of interstitial loops and dislocation lines in austenitic high entropy alloys: atomic-scale modellingcitations
- 2024Structure and stability of small self-interstitials clusters in zirconiumcitations
- 2024Collinear-spin machine learned interatomic potential for Fe7Cr2Ni alloycitations
- 2024Collinear-spin machine learned interatomic potential for Fe 7 Cr 2 Ni alloycitations
- 2023Multi-Objective Optimization of the Nanocavities Diffusion in Irradiated Metalscitations
- 2023Multi-Objective Optimization of the Nanocavities Diffusion in Irradiated Metalscitations
- 2023Breakaway Growth Modeling of Zirconium under Irradiation: The Importance of the Formation of a-Loop Layerscitations
- 2023Compact A15 Frank-Kasper nano-phases at the origin of dislocation loops in face-centred cubic metalscitations
- 2022Development of a plasticity-oriented interatomic potential for CrFeMnNi high entropy alloyscitations
- 2022Breakaway Growth Modeling of Zirconium under Irradiation: The Importance of the Formation of a-Loop Layerscitations
- 2022Multi-objective optimization of the nanocavities diffusion in irradiated metalscitations
- 2022Atomistic investigation of elementary dislocation properties influencing mechanical behaviour of Cr15Fe46Mn17Ni22 alloy and Cr20Fe70Ni10 alloycitations
- 2022Impact of the local microstructure fluctuations on radiation-induced segregation in dilute Fe-Ni and Ni-Ti model alloys: a combined modeling and experimental analysiscitations
- 2021Effect of Ni, Mo and Mn content on spinodal decomposition kinetics and G-phase precipitation of aged model cast austenitic stainless steels.citations
- 2021Modelling the primary damage in Fe and W: Influence of the short range interactions on the cascade properties: Part 1 – Energy transfercitations
- 2021Physical mechanisms and parameters for models of microstructure evolution under irradiation in Fe alloys – Part I: Pure Fecitations
- 2021Effect of Ni, Mo and Mn content on spinodal decomposition kinetics and G-phase precipitation of aged model cast austenitic stainless steelscitations
- 2021Elastic dipole tensors and relaxation volumes of point defects in concentrated random magnetic Fe-Cr alloyscitations
- 2020Influence of vacancy diffusional anisotropy: Understanding the growth of zirconium alloys under irradiation and their microstructure evolutioncitations
- 2020Thermodynamic modeling of G-phase and assessment of phase stabilities in reactor pressure vessel steels and cast duplex stainless steelscitations
- 2019Flexible thermoelectric device based on TiS2(HA)x n-type nanocomposite printed on papercitations
- 2018Organic thermoelectric devices based on a stable n-type nanocomposite printed on papercitations
- 2018Atomistic Modeling of Radiation Damage in Metallic Alloyscitations
- 2017Introducing $ab initio$ based neural networks for transition-rate prediction in kinetic Monte Carlo simulationscitations
- 2014Sintering of ferritic and austenitic nanopowders using Spark Plasma Sinteringcitations
- 2014Kinetics of secondary phase precipitation during spinodal decomposition in duplex stainless steels: A kinetic Monte Carlo model – Comparison with atom probe tomography experimentscitations
Places of action
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document
Multi-Objective Optimization of the Nanocavities Diffusion in Irradiated Metals
Abstract
Materials in fission reactors or fusion tokamaks are exposed to neutron irradiation, which creates defects in the microstructure. With time, depending on the temperature, defects diffuse and form, among others, nanocavities, altering the material performance. The goal of this work is to determine the diffusion properties of the nanocavities in tungsten. We combine (i) a systematic experimental study in irradiated samples annealed at different temperatures up to 1800 K (the created nanocavities diffuse, and their coalescence is studied by transmission electron microscopy); (ii) our object kinetic Monte Carlo model of the microstructure evolution fed by a large collection of atomistic data; and (iii) a multi-objective optimization method (using model inversion) to obtain the diffusion of nanocavities, input parameters of our model, from the comparison with the experimental observations. We simplify the multi-objective function, proposing a projection into the parameter space. Non-dominated solutions are revealed: two “valleys” of minima corresponding to the nanocavities density and size objectives, respectively, which delimit the Pareto optimal solution. These “valleys” are found to be the upper and lower uncertainties on the diffusion beyond the uncertainties on the experimental and simulated results. The nanocavity diffusion can be split in three domains: the mono vacancy and small vacancy clusters, for which atomistic models are affordable, the small nanocavities for which our approach is decisive, and the nanocavities larger than 1.5 nm for which the classical surface diffusion theory is valid.