Stability of $\beta$″ nano-phases in Al-Mg-Si(-Cu) alloy under high dose ion irradiation
| Autor: | Marion Descoins, A. Lopez, Cédric Baumier, Alexis Deschamps, Dominique Mangelinck, A. Gentils, Karl Buchanan, J. Garnier, J. Ribis, Patricia Donnadieu, Kimberly Colas, F. Leprêtre, Camille Flament, Yves Serruys |
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| Přispěvatelé: | CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Science et Ingénierie des Matériaux et Procédés (SIMaP), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Science et Ingénierie des Matériaux et Procédés (SIMaP ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics Diffusion Alloy Analytical chemistry Crystal growth 02 engineering and technology Atom probe engineering.material [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences law.invention law Phase (matter) 0103 physical sciences Irradiation 010302 applied physics Metals and Alloys 021001 nanoscience & nanotechnology Microstructure Electronic Optical and Magnetic Materials Crystallography Transmission electron microscopy Ceramics and Composites engineering 0210 nano-technology |
| Zdroj: | Acta Mater. Acta Mater., 2017, 128, pp.64-76. ⟨10.1016/j.actamat.2017.01.044⟩ Acta Materialia Acta Materialia, 2017, 128, pp.64-76. ⟨10.1016/j.actamat.2017.01.044⟩ |
| ISSN: | 1359-6454 |
| Popis: | International audience; The microstructure of a 6061-T6 Al alloy subjected to ion irradiation at 95 and 165 displacements per atom (dpa) has been evaluated by transmission electron microscopy and atom-probe tomography. The initial microstructure of the alloy is dominated by needle-shaped β″ precipitates. After 95 dpa irradiation, the β″ precipitates display a slight lattice distortion and are partially dissolved, together with the formation of a new phase. After 165 dpa irradiation, the β″ precipitates are completely dissolved, the new phase has grown and a high density of clusters rich in Mg, Si, Cu and Cr is observed. The determination of ballistic versus radiation enhanced diffusion coefficients shows that enhanced diffusion is predominant for β” dissolution. The formation and growth of the new particles may be caused by radiation induced segregation. Solute drag by vacancies or mixed dumbbell interstitials migration could explain the diffusion of some elements as Si or Cr towards the new particles. |
| Databáze: | OpenAIRE |
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