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THEME 1 : Science des matériaux et grands instruments
Materials science and large scale facilities
COORDINATEURS : (coordinators)
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Denis GRATIAS LEM CNRS/ONERA BP 72 92322 CHATILLON CEDEX Tél. : 01 46 73 44 45 |
Thomas SCHENK Institut Jean Lamour – UMR 7198 Ecole des Mines de Nancy Parc de Saurupt 54042 NANCY Cedex |
Eric MAIRE INSA de Lyon - MATEIS 25 avenue Capelle 69621 VILLEURBANNE CEDEX Tél. : 04.72.43.88.61 |
Anne-Lise ADENOT-ENGELVIN CEA/Le Ripault BP 16 37260 MONTS Tél. : 02.47.34.48.96 |
These last decades, scientists in Materials science have progressively gained easier and easier access to an increasing number of large scale facilities in Europe (ILL, LLB, DESY, ESRF, SOLEIL, Diamond, GANIL, LNCMI…) so that these outstanding installations are now considered as unavoidable standard tools for most studies of materials.
These include the basic problem of atomic structure determination using sophisticated diffraction techniques, single crystal and powder diffractions, anomalous scattering, EXAFS, standing waves and absorption spectroscopy.
Local chemical analyses are now very accurate with X-ray absorption (XAS), and X-ray emission spectroscopies (XES) for chemical characterization including low Z materials. High flux and high prenetration have also permitted the X-ray imaging techniques to be developped in order to reveal the internal structure of engineering materials (X ray radio and tomography).
This new (3D) way of imaging the structure are today used routinely at a very high temporal (fast in situ experiments) and spatial resolution (nano imaging). Also, because of the very intense incident beams, time resolved studies of phase transformations down to millisecond resolution are now possible that help deciphering the mechanisms at atomic scale. Electronic structures and studies on magnetism have considerably beneficed on magnetic scattering and nuclear resonant scattering techniques with dynamics in the nanosecond to microsecond time regime. Also, new original materials are now available that are prepared under extreme conditions like intense magnetic fields or high pressure and/or high temperature.
Finally, structural dynamics and inelastic properties are studied by measuring collective excitations in disordered materials and phonon spectra in crystals through inelastic X-ray and nuclear (resonance) scattering, thus allowing the study of atomic diffusion and rotational motions.
The purpose of the symposium is to gather materials scientists specialists of these large installations in order to sketch the state of the art with some of the most significant results in materials science, and discuss the new possibities of investigations offered by the last generations of these installations.
 SOLEIL - Montage original de traction biaxiale pour étudier la déformation plastique in situ |
 Machine de traction à temprérature ambiante (Mateis Insa de Lyon) utilisable en tomographie synchrotron |
 ESRF - Machine de traction à chaud Utilisée sur la ligne haute énergie ID15 |
 G5.2 : Diffractomètre dédié à l’analyse des déformations résiduelles |
 Détermination des contraintes sur G5.2 d’une pièce d'aile d’avion |
 6T1 : Diffractomètre 4 cercles dédié aux mesures de texture. |