Laue microdiffraction at the ESRF
Chapitre d'ouvrage scientifique
Author
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2568 European Synchrotron Radiation Facility [ESRF]
40368 Nanostructures et Rayonnement Synchrotron [NRS ]
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2568 European Synchrotron Radiation Facility [ESRF]
40368 Nanostructures et Rayonnement Synchrotron [NRS ]
460266 SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé [SYMMES]
502643 Synthèse, Structure et Propriétés de Matériaux Fonctionnels [STEP]
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40368 Nanostructures et Rayonnement Synchrotron [NRS ]
460264 Modélisation et Exploration des Matériaux [MEM]
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40221 Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
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2568 European Synchrotron Radiation Facility [ESRF]
22126 Centre Science des Matériaux et des Structures [SMS-ENSMSE]
40221 Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
109461 Département Microstructures et Propriétés Mécaniques [MPM-ENSMSE]
Abstract
This book highlights emerging diffraction studies of strain and dislocation gradients with mesoscale resolution, which is currently a focus of research at laboratories around the world. While ensemble-average diffraction techniques are mature, grain and subgrain level measurements needed to understand real materials are just emerging. In order to understand the diffraction signature of different defects, it is necessary to understand the distortions created by the defects and the corresponding changes in the reciprocal space of the non-ideal crystals. Starting with a review of defect classifications based on their displacement fields, this book then provides connections between different dislocation arrangements, including geometrically necessary and statistically stored dislocations, and other common defects and the corresponding changes in the reciprocal space and diffraction patterns. Subsequent chapters provide an overview of microdiffraction techniques developed during the last decade to extract information about strain and dislocation gradients. X-ray microdiffraction is a particularly exciting application compared with alternative probes of local crystalline structure, orientation and defect density, because it is inherently non-destructive and penetrating.
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