3D grain reconstruction from laboratory diffraction contrast tomography

A method for reconstructing the three‐dimensional grain structure from data collected with a recently introduced laboratory‐based X‐ray diffraction contrast tomography system is presented. Diffraction contrast patterns are recorded in Laue‐focusing geometry. The diffraction geometry exposes shape in...

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Bibliographic Details
Published in:Journal of applied crystallography 2019-06, Vol.52 (3), p.643-651
Main Authors: Bachmann, Florian, Bale, Hrishikesh, Gueninchault, Nicolas, Holzner, Christian, Lauridsen, Erik Mejdal
Format: Article
Language:English
Subjects:
Crystallography
DCT
Diffraction patterns
grain mapping
Grain structure
Laboratories
Reconstruction
reconstruction schemes
Research Papers
Solution space
three‐dimensional X‐ray diffraction (3DXRD)
Tomography
X-ray diffraction
X‐ray diffraction contrast microscopy
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Summary:A method for reconstructing the three‐dimensional grain structure from data collected with a recently introduced laboratory‐based X‐ray diffraction contrast tomography system is presented. Diffraction contrast patterns are recorded in Laue‐focusing geometry. The diffraction geometry exposes shape information within recorded diffraction spots. In order to yield the three‐dimensional crystallographic microstructure, diffraction spots are extracted and fed into a reconstruction scheme. The scheme successively traverses and refines solution space until a reasonable reconstruction is reached. This unique reconstruction approach produces results efficiently and fast for well suited samples. A novel reconstruction method to retrieve grain structure from laboratory diffraction contrast tomography is presented and evaluated.
ISSN:1600-5767
0021-8898
1600-5767
DOI:10.1107/S1600576719005442