Nanox : a miniature mechanical stress rig designed for near-field X-ray diffraction imaging techniques - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Synchrotron Radiation Année : 2016

Nanox : a miniature mechanical stress rig designed for near-field X-ray diffraction imaging techniques

(1) , (1) , (2)
1
2

Résumé

Multi-modal characterization of polycrystalline materials by combined use of three-dimensional (3D) X-ray diffraction and imaging techniques may be considered as the 3D equivalent of surface studies in the electron microscope combining diffraction and other imaging modalities. Since acquisition times at synchrotron sources are nowadays compatible with four-dimensional (time lapse) studies, suitable mechanical testing devices are needed which enable switching between these different imaging modalities over the course of a mechanical test. Here a specifically designed tensile device, fulfilling severe space constraints and permitting to switch between X-ray (holo)tomography, diffraction contrast tomography and topotomography, is presented. As a proof of concept the 3D characterization of an Al–Li alloy multicrystal by means of diffraction contrast tomography is presented, followed by repeated topotomo-graphy characterization of one selected grain at increasing levels of deformation. Signatures of slip bands and sudden lattice rotations inside the grain have been shown by means of in situ topography carried out during the load ramps, and diffraction spot peak broadening has been monitored throughout the experiment.
Fichier principal
Vignette du fichier
Gueninchault-Proudhon-Ludwig J synchrotron radiation 2016 1474-1483.pdf (1.65 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01392783 , version 1 (04-11-2016)

Identifiants

Citer

Nicolas Guéninchault, Henry Proudhon, Wolfgang Ludwig. Nanox : a miniature mechanical stress rig designed for near-field X-ray diffraction imaging techniques. Journal of Synchrotron Radiation, 2016, 23, pp.1474-1483. ⟨10.1107/S1600577516013850⟩. ⟨hal-01392783⟩
161 Consultations
196 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More