Single-shot full strain tensor determination with microbeam X-ray Laue diffraction and a two-dimensional energy-dispersive detector
| Autor: | S. Send, Lothar Strüder, Christoph Kirchlechner, Robert Hartmann, Jozef Keckes, T. Conka Nurdan, A. Abboud, Jean-Sébastien Micha, Olivier Ulrich, Ullrich Pietsch |
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| Přispěvatelé: | TAÜ, Mühendislik Fakültesi, Mekatronik Mühendisliği Bölümü, Çonka Yıldız, Tuba |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Synchrotron radiation 02 engineering and technology energy-dispersive X-ray detectors 01 natural sciences General Biochemistry Genetics and Molecular Biology Strain Crystal Stress (mechanics) strain Microbeam X-Ray Laue Diffraction Optics 0103 physical sciences microbeam X-ray Laue diffraction Energy-Dispersive X-Ray Detectors 010302 applied physics Physics STRAIN MICROBEAM X-RAY LAUE DIFFRACTION ENERGY-DISPERSIVE X-RAY DETECTORS Cauchy stress tensor business.industry Infinitesimal strain theory Microbeam 021001 nanoscience & nanotechnology Research Papers X-ray crystallography 0210 nano-technology business |
| Zdroj: | 'Journal of Applied Crystallography ', vol: 50, pages: 901-908 (2017) Journal of Applied Crystallography |
| ISSN: | 0021-8898 |
| Popis: | By simultaneously measuring changes in energy and reflection angle of Laue spots with respect to a reference position, it is possible to measure all lattice parameters of a unit cell and calculate the full strain/stress tensors in a single-shot experiment with high spatial resolution. The full strain and stress tensor determination in a triaxially stressed single crystal using X-ray diffraction requires a series of lattice spacing measurements at different crystal orientations. This can be achieved using a tunable X-ray source. This article reports on a novel experimental procedure for single-shot full strain tensor determination using polychromatic synchrotron radiation with an energy range from 5 to 23 keV. Microbeam X-ray Laue diffraction patterns were collected from a copper micro-bending beam along the central axis (centroid of the cross section). Taking advantage of a two-dimensional energy-dispersive X-ray detector (pnCCD), the position and energy of the collected Laue spots were measured for multiple positions on the sample, allowing the measurement of variations in the local microstructure. At the same time, both the deviatoric and hydrostatic components of the elastic strain and stress tensors were calculated. |
| Databáze: | OpenAIRE |
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