TEM study of NbC heterogeneous precipitation in ferrite
| Autor: | F. Perrard, Patrick Barges, Patricia Donnadieu, Alexis Deschamps |
|---|---|
| Přispěvatelé: | 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)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de thermodynamique et physico-chimie métallurgiques (LTPCM), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG), Metallurgy, Ascometal CREAS, ArcelorMittal Maizières Research SA, ArcelorMittal |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
010302 applied physics
Quenching Materials science Condensed matter physics Precipitation (chemistry) Alloy 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Dark field microscopy Crystallography Transmission electron microscopy Ferrite (iron) Physical Sciences 0103 physical sciences engineering [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Dislocation 0210 nano-technology |
| Zdroj: | Philosophical Magazine Philosophical Magazine, Taylor & Francis, 2006, 86 (27), pp.4271-4284 Philosophical Magazine, Taylor & Francis, 2006, 86 (27), pp.4271-4283. ⟨10.1080/14786430500479720⟩ |
| ISSN: | 1478-6435 |
| DOI: | 10.1080/14786430500479720⟩ |
| Popis: | International audience; The heterogeneous precipitation of NbC in ferrite has been quantitatively characterised by Transmission Electron Microscopy in a Fe-C-Nb model alloy for different isothermal heat treatments. Elongation and size distribution of precipitates have been derived from Dark Field imaging. For each precipitation states, the precipitation of NbC is occurring on dislocations due to the as-quenched state. This precipitation mechanism leads to characteristic arrays of precipitates in which precipitates grow in a self-similar manner. A detailed study of these arrays has shown that most dislocations decorated by these arrays are edge dislocations with type line vectors. There is only one variant on a given dislocation. This selection can be interpreted by the interaction between dislocation and precipitate strain fields. |
| Databáze: | OpenAIRE |
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