About this Abstract |
Meeting |
5th International Congress on 3D Materials Science (3DMS 2021)
|
Symposium
|
5th International Congress on 3D Materials Science (3DMS 2021)
|
Presentation Title |
Observation of Plastic Slip Localization in a Ti-7Al Alloy Using X-ray Topotomography |
Author(s) |
Patrick Gregory Callahan, Jean-Charles Stinville, McLean Echlin, Wolfgang Ludwig, Henry Proudhon, Tresa Pollock |
On-Site Speaker (Planned) |
Patrick Gregory Callahan |
Abstract Scope |
Specimens of the titanium alloy Ti-7Al were studied with high-resolution digital image correlation (HR-DIC) in an SEM along with x-ray diffraction contrast tomography (DCT) and x-ray topotomography (TT) at a synchrotron facility. Several of the samples were pre-strained near the elastoplastic transition before DCT and TT was performed. This enabled regions of localized plasticity, or slip localization, observed in 3D within both bulk and surface grains using TT to be correlated with HR-DIC observations of plasticity at the surface. In another sample, a number grains of interest were identified prior to deformation using DCT. TT data was collected from these grains before deformation, and then at several deformation steps in order to study the evolution of slip localization in 3D. These observations can provide new insights into plastic localization as it relates to microstructural configurations and on plastic transmission between grains both at the surface and internally in 3D. |
Proceedings Inclusion? |
Definite: Other |