Structure determination of intermetallic phases in bulk Al alloys by 3D electron diffraction tomography
Klein H. 1Bellavoine M. 2Znaj D.2
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. Université Grenoble Alpes CNRS Institut Néel
2. C-TEC Constellium Technology Center
折叠
Abstract
? 2022 Elsevier B.V.Secondary phases in bulk metallic samples are difficult to characterize by conventional X-ray diffraction because the diffracted intensities are dominated by the contribution of the bulk material. Electron diffraction provides a better spatial resolution and one can obtain single crystal diffraction data from submicron sized precipitates. In this work we show that 3D electron diffraction tomography can yield diffraction data sets suitable for ab initio structure solution. We apply the recently proposed low-dose electron diffraction tomography method to 3 different phases in Al-based alloys: θ’-Al2Cu, Al6Fe and Al4.5FeSi. The structures of these phases were unambiguously determined even though there are other phases with similar chemical compositions and EDS analysis is not sufficient to distinguish them.
Key words
3D electron diffraction/bulk alloys/crystallography/structure solution/transmission electron microscope
NSTL
Elsevier