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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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Dumitraschkewitz, Phillip
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Unraveling the potential of Cu addition and cluster hardening in Al-Mg-Si alloyscitations
- 2023In situ transmission electron microscopy as a toolbox for the emerging science of nanometallurgycitations
- 2023Fast differential scanning calorimetry to mimic additive manufacturing processing: specific heat capacity analysis of aluminium alloyscitations
- 2023Strain-induced clustering in Al alloyscitations
- 2022MEMS-Based in situ electron-microscopy investigation of rapid solidification and heat treatment on eutectic Al-Cucitations
- 2021Giant hardening response in AlMgZn(Cu) alloyscitations
- 2020Microstructural Change during the Interrupted Quenching of the AlZnMg(Cu) Alloy AA7050citations
- 2019Size-dependent diffusion controls natural aging in aluminium alloyscitations
- 2017Impact of Alloying on Stacking Fault Energies in γ-TiAlcitations
- 2016Analysis of initial clustering in Al-Mg-Si alloys via atom probe tomography
Places of action
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article
Size-dependent diffusion controls natural aging in aluminium alloys
Abstract
A key question in materials science is how fast properties evolve, which relates to the kinetics of phase transformations. In metals, kinetics is primarily connected to diffusion, which for substitutional elements is enabled via mobile atomic-lattice vacancies. In fact, non-equilibrium vacancies are often required for structural changes. Rapid quenching of various important alloys, such as Al- or Mg-alloys, results for example in natural aging, i.e. slight movements of solute atoms in the material, which significantly alter the material properties. In this study we demonstrate a size effect of natural aging in an AlMgSi alloy via atom probe tomography with near-atomic image resolution. We show that non-equilibrium vacancy diffusional processes are generally stopped when the sample size reaches the nanometer scale. This precludes clustering and natural aging in samples below a certain size and has implications towards the study of non-equilibrium diffusion and microstructural changes via microscopy techniques.