Effect of sample thinning on strains and lattice rotations measured from Transmission Kikuchi diffraction in the SEM
| Autor: | Jack C. Haley, Phani Karamched, Sergio Lozano-Perez, Angus J. Wilkinson, Naganand Saravanan |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Diffraction Materials science Cross-correlation Condensed matter physics Relaxation (NMR) Lattice (group) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Sample (graphics) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 0103 physical sciences Angular resolution 0210 nano-technology Instrumentation Image resolution Electron backscatter diffraction |
| DOI: | 10.1016/j.ultramic.2021.113267 |
| Popis: | Cross correlation based high angular resolution EBSD (or HR-EBSD) has been developed for measurement of elastic strains, lattice rotations (and estimating GND density). Recent advances in Transmission Kikuchi diffraction (TKD), especially the on-axis geometry allows the possibility of acquiring patterns at higher spatial resolution. However, some controversy remains as to whether stresses/strains measured after the sample thinning process are still representative of the bulk sample. In this paper, we explore a way of applying the HR-EBSD method to study strains and lattice rotations in an initially bulk sample, that is then progressively thinned down until a similar analysis can be performed on thin (and electron transparent) samples. Thus, HR-TKD will be compared as a possible alternative to HR-EBSD, in scenarios when it is not always possible to perform EBSD on the surface of the sample. An estimate of strain relaxation in the sample as a result of sample thinning is presented. |
| Databáze: | OpenAIRE |
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