About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Combining X-ray Diffraction Contrast Tomography and Topo-tomography to Study In-situ the Mechanics of Polycrystalline Materials |
Author(s) |
Henry Proudhon, Wolfgang Ludwig, Jean-Charles Stinville, Patrick Callahan |
On-Site Speaker (Planned) |
Henry Proudhon |
Abstract Scope |
Diffraction Contrast Tomography (DCT) remains the fastest 3D grain mapping characterization method and allow further characterization of specific crystallographic locations. Mechanical testing under in situ X-ray topo-tomography (TT), carried out at the European synchrotron, will be presented to study the incipient plasticity of polycrystalline metallic alloys. As the method becomes more and more automated, it allows both quantitative and statistical measurements in the bulk of the microstructure. Examples in both Aluminium and Titanium alloys will be shown. Coupling experiments with crystal plasticity finite element computations at the grain scale is the key to unlock microstructure-deformation mechanisms. Here, detailed activation of slip systems in selected grains located under the surface will be investigated. Simultaneous modeling/experimental approaches will be discussed in light of the results. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |