Three-dimensional maps of grain boundaries and the stress state of individual grains in polycrystals and powders
By Henning Friis Poulsen, S. F. Nielsen, E. Lauridsen, Søren Schmidt, Robert M. Suter, Ulrich Lienert, L. Margulies, T. Lorentzen, D. Jensen. 2001
343 citations recorded by the source corpus.
A fast and non-destructive method for generating three-dimensional maps of the grain boundaries in undeformed polycrystals is presented. The method relies on tracking of micro-focused high-energy X-rays. It is verified by comparing an electron microscopy map of the orientations on the 2.5 × 2.5 mm surface of an aluminium polycrystal with tracking data produced at the 3DXRD microscope at the European Synchrotron Radiation Facility. The average difference in grain boundary position between the two techniques is 26 µm, comparable with the spatial resolution of the 3DXRD microscope. As another extension of the tracking concept, algorithms for determining the stress state of the individual grains are derived. As a case study, 3DXRD results are presented for the tensile deformation of a copper specimen. The strain tensor for one embedded grain is determined as a function of load. The accuracy on the strain is Δ∊ ≃ 10−4.
Subfields: Materials Chemistry, Statistical and Nonlinear Physics, Surfaces, Coatings and Films
View Paper: https://www.semanticscholar.org/paper/a9e7992e902f82e8802c7509e4480ee5efe15922
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In Materials Chemistry
- Michael D. Sangid
- J. Markmann
- Celal Soyarslan
- Mark R. Daymond
- Henning Friis Poulsen
- Swantje Bargmann
- V. Honkimäki
- J. Wert
In Statistical and Nonlinear Physics
In Surfaces, Coatings and Films
Citations in the corpus
- An introduction to three-dimensional X-ray diffraction microscopy (2012, methodology): “Following the first demonstration experiments more than a decade ago (Poulsen et al., 1997, 2001; Lauridsen et al., 2001; Margulies et al., 2002; Fu et al., 2003), three-dimensional X-ray diffraction (3DXRD) has proliferated in a number of directions.”
- The physics of fatigue crack initiation (2013, background): “Using near field high-energy X-ray diffraction (HEXRD), complete non-destructive 4-D microstructure information can be obtained including the grain size, orientation, topology, and position [153].”
- Measuring strain distributions in amorphous materials (2004, background): “as well as on the scale of the (embedded) grains and sub-grain”
- Review of third and next generation synchrotron light sources (2005, methodology): “…ESRF, APS and SPring8 enable techniques to study all grains and their properties in the interior of a polycrystalline sample with micrometre resolution (Poulsen et al 2001, Larson et al 2002) even in situ under deformation (Margulies et al 2001) or during recrystallization (Offermann et al 2002).”
- Generation of 3D representative volume elements for heterogeneous materials: A review (2018, background): “The comparatively recently developed and not yet widely available high-energy X-ray diffraction microscopy (3DXRD) [125] and X-ray diffraction contrast tomography (DCT) [113] combine classical tomographic principles with diffraction measurements to reconstruct 3D grain shapes and orientations.”