Reconstructing intragranular strain fields in polycrystalline materials from scanning 3DXRD data

© N. Axel Henningsson et al. 2020.

Détails bibliographiques
Publié dans:Journal of applied crystallography. - 1998. - 53(2020), Pt 2 vom: 01. Apr., Seite 314-325
Auteur principal: Henningsson, N Axel (Auteur)
Autres auteurs: Hall, Stephen A, Wright, Jonathan P, Hektor, Johan
Format: Article en ligne
Langue:English
Publié: 2020
Accès à la collection:Journal of applied crystallography
Sujets:Journal Article 3DXRD X-ray diffraction intragranular strain tomography
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520 |a Two methods for reconstructing intragranular strain fields are developed for scanning three-dimensional X-ray diffraction (3DXRD). The methods are compared with a third approach where voxels are reconstructed independently of their neighbours [Hayashi, Setoyama & Seno (2017). Mater. Sci. Forum, 905, 157-164]. The 3D strain field of a tin grain, located within a sample of approximately 70 grains, is analysed and compared across reconstruction methods. Implicit assumptions of sub-problem independence, made in the independent voxel reconstruction method, are demonstrated to introduce bias and reduce reconstruction accuracy. It is verified that the two proposed methods remedy these problems by taking the spatial properties of the inverse problem into account. Improvements in reconstruction quality achieved by the two proposed methods are further supported by reconstructions using synthetic diffraction data 
650 4 |a Journal Article 
650 4 |a 3DXRD 
650 4 |a X-ray diffraction 
650 4 |a intragranular strain 
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700 1 |a Wright, Jonathan P  |e verfasserin  |4 aut 
700 1 |a Hektor, Johan  |e verfasserin  |4 aut 
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