Single-shot full strain tensor determination with microbeam X-ray Laue diffraction and a two-imensional energy-dispersive detector
Conka, Tuba/0000-0003-0671-3805 ; WOS:000402701600027 ; PubMed: 28656042 ; 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. ; BMBF VerbundforschungFederal Ministry of Education & Research (BMBF) [05K13PS1]; knock-on initiative of the School of Science and Engineering of Siegen University; Austrian Federal Government ; This work was supported by BMBF Verbundforschung, project No. 05K13PS1, and by the knock-on initiative of the School of Science and Engineering of Siegen University. JK appreciates the financial support of the Austrian Federal Government within the research activities of the K2 Competence operated by the Materials Center Leoben Forschungs GmbH in the framework of the Austrian COMET Competence Centre Programme.
