2014•Microscopy and MicroanalysisRequires access

Microstructural Characterization of an Al-Li-Mg-Cu Alloy by Correlative Electron Tomography and Atom Probe Tomography

Xiangyuan Xiong, Matthew Weyland

Abstract

Correlative electron tomography and atom probe tomography have been carried out successfully on the same region of a commercial 8090 aluminum alloy (Al-Li-Mg-Cu). The combination of the two techniques allows accurate geometric reconstruction of the atom probe tomography data verified by crystallographic information retrieved from the reconstruction. Quantitative analysis of the precipitate phase compositions and volume fractions of each phase have been obtained from the atom probe tomography and electron tomography at various scales, showing strong agreement between both techniques.

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Key concepts: Atom probe, Tomography, Electron tomography, Materials science, Alloy, Correlative, Characterization (materials science), Atom (system on chip)