About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
|
Symposium
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6th International Congress on 3D Materials Science (3DMS 2022)
|
Presentation Title |
Observing Bulk Plasticity in Ti-7Al by Topotomography |
Author(s) |
Patrick Gregory Callahan, Jean-Charles Stinville, Henry Proudhon, Mclean P Echlin, Wolfgang Ludwig, Tresa M Pollock |
On-Site Speaker (Planned) |
Patrick Gregory Callahan |
Abstract Scope |
The interaction of defects with the microstructure in metallic materials often governs their mechanical properties. In this study, the plastic localization in a polycrystalline Ti-7Al sample was observed at the surface using high-resolution digital image correlation (HR-DIC) in an SEM and in the bulk using x-ray topotomography at ESRF. The full 3D microstructure was determined using diffraction contrast tomography. A number of grains of interest were chosen from the 3D microstructure and studied by topotomography and several steps of increasing strain. Highly localized regions of contrast were observed in the x-ray topographs. The contrast is due to plastic localization, and so it enabled us to identify the bulk plasticity. From these observations, slip transmission in the bulk could be studied in terms of the configuration of the polycrystalline microstructure, and compared to the observations at the surface as determined from the HR-DIC measurements. |
Proceedings Inclusion? |
Definite: Other |