Effect of contact alignment on shrinkage anisotropy during sintering: Stereological model, discrete element model and experiments on NdFeB compacts
| Autor: | Jean-Michel Missiaen, C. Rado, B. Hugonnet, C.L. Martin |
|---|---|
| Přispěvatelé: | Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Science et Ingénierie des Matériaux et Procédés (SIMaP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Contacts Sintering 02 engineering and technology 010402 general chemistry 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials lcsh:TA401-492 Statistics::Methodology General Materials Science Discrete element model Composite material Anisotropy Shrinkage NdFeB Mechanical Engineering 021001 nanoscience & nanotechnology Discrete element method 0104 chemical sciences Neodymium magnet Mechanics of Materials Particle lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Contact area |
| Zdroj: | Materials & Design Materials & Design, 2020, 191, pp.108575. ⟨10.1016/j.matdes.2020.108575⟩ Materials and Design Materials and Design, Elsevier, 2020, 191, pp.108575. ⟨10.1016/j.matdes.2020.108575⟩ Materials & Design, Vol 191, Iss, Pp-(2020) |
| ISSN: | 0261-3069 0264-1275 |
| DOI: | 10.1016/j.matdes.2020.108575⟩ |
| Popis: | International audience; This works aims at analysing the effect of alignment of particle contacts on the shrinkage anisotropy during sintering. A stereological model is proposed which relates the shrinkage anisotropy factor to the distribution of contact area orientations. The shrinkage anisotropy is further analysed by using a discrete element method (DEM) to simulate the sintering of isostatically compacted packings of aligned particle chains. Finally, the analysis is performed on experimental magnetically oriented NdFeB powder compacts. The stereological model predicts a higher shrinkage in the direction of preferentially aligned contacts, in agreement with DEM simulations and experimental results, where a shrinkage anisotropy factor close to 2 is observed. |
| Databáze: | OpenAIRE |
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