Tutorial: crystal orientations and EBSD – or which way is up?
Electron backscatter diffraction (EBSD) is an automated technique that can measure the orientation of crystals in a sample very rapidly. There are many sophisticated software packages that present measured data. Unfortunately, due to crystal symmetry and differences in the set-up of microscope and E...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
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Elsevier
2016
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| _version_ | 1797054739778633728 |
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| author | Wilkinson, A Britton, T Jiang, J Guo, Y Vilalta-Clemente, A Wallis, D Hansen, L Winkelmann, A |
| author_facet | Wilkinson, A Britton, T Jiang, J Guo, Y Vilalta-Clemente, A Wallis, D Hansen, L Winkelmann, A |
| author_sort | Wilkinson, A |
| collection | OXFORD |
| description | Electron backscatter diffraction (EBSD) is an automated technique that can measure the orientation of crystals in a sample very rapidly. There are many sophisticated software packages that present measured data. Unfortunately, due to crystal symmetry and differences in the set-up of microscope and EBSD software, there may be accuracy issues when linking the crystal orientation to a particular microstructural feature. In this paper we outline a series of conventions used to describe crystal orientations and coordinate systems. These conventions have been used to successfully demonstrate that a consistent frame of reference is used in the sample, unit cell, pole figure and diffraction pattern frames of reference. We establish a coordinate system rooted in measurement of the diffraction pattern and subsequent linking to all other coordinate systems. A fundamental outcome of this analysis is to note that the beamshift coordinate system needs to be precisely defined for consistent 3D microstructure analysis. This is supported through a series of case studies examining particular features of the microscope settings and/or unambiguous crystallographic features. These case studies can be generated easily in most laboratories and represent an opportunity to demonstrate confidence in use of recorded orientation data. Finally, we include a simple software tool, written in both MATLAB® and Python, which the reader can use to compare consistency with their own microscope set-up and which may act a springboard for further offline analysis. |
| first_indexed | 2024-03-06T19:01:28Z |
| format | Journal article |
| id | oxford-uuid:13ae1391-937e-4a1b-9d44-66b39ed392b7 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:01:28Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:13ae1391-937e-4a1b-9d44-66b39ed392b72022-03-26T10:15:15ZTutorial: crystal orientations and EBSD – or which way is up?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:13ae1391-937e-4a1b-9d44-66b39ed392b7Symplectic Elements at OxfordElsevier2016Wilkinson, ABritton, TJiang, JGuo, YVilalta-Clemente, AWallis, DHansen, LWinkelmann, AElectron backscatter diffraction (EBSD) is an automated technique that can measure the orientation of crystals in a sample very rapidly. There are many sophisticated software packages that present measured data. Unfortunately, due to crystal symmetry and differences in the set-up of microscope and EBSD software, there may be accuracy issues when linking the crystal orientation to a particular microstructural feature. In this paper we outline a series of conventions used to describe crystal orientations and coordinate systems. These conventions have been used to successfully demonstrate that a consistent frame of reference is used in the sample, unit cell, pole figure and diffraction pattern frames of reference. We establish a coordinate system rooted in measurement of the diffraction pattern and subsequent linking to all other coordinate systems. A fundamental outcome of this analysis is to note that the beamshift coordinate system needs to be precisely defined for consistent 3D microstructure analysis. This is supported through a series of case studies examining particular features of the microscope settings and/or unambiguous crystallographic features. These case studies can be generated easily in most laboratories and represent an opportunity to demonstrate confidence in use of recorded orientation data. Finally, we include a simple software tool, written in both MATLAB® and Python, which the reader can use to compare consistency with their own microscope set-up and which may act a springboard for further offline analysis. |
| spellingShingle | Wilkinson, A Britton, T Jiang, J Guo, Y Vilalta-Clemente, A Wallis, D Hansen, L Winkelmann, A Tutorial: crystal orientations and EBSD – or which way is up? |
| title | Tutorial: crystal orientations and EBSD – or which way is up? |
| title_full | Tutorial: crystal orientations and EBSD – or which way is up? |
| title_fullStr | Tutorial: crystal orientations and EBSD – or which way is up? |
| title_full_unstemmed | Tutorial: crystal orientations and EBSD – or which way is up? |
| title_short | Tutorial: crystal orientations and EBSD – or which way is up? |
| title_sort | tutorial crystal orientations and ebsd or which way is up |
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