| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
Mapping Strain, Stress and Orientation in Metals in 3D |
| Author(s) |
Nils Axel Henningsson, Mustafacan Kutsal, Jonathan Wright, Wolfgang Ludwig, Henning Sørensen Osholm , Stephen Hall, Grethe Winther, Henning Friis Poulsen |
| On-Site Speaker (Planned) |
Nils Axel Henningsson |
| Abstract Scope |
At industrially relevant levels of deformation, the mechanical response of metals depends critically on plastic deformation. Key properties such as ductility, failure, and strength emerge from a diverse array of microscopic deformation mechanisms. We argue that to study these characteristics, in-situ, bulk representative, 3D measurements are indispensable. We introduce a synchrotron-based X-ray diffraction methodology capable of non-destructively mapping strain, orientation, and stress fields in polycrystalline metals in three dimensions. With this method, converting experimentally measured diffraction patterns into tensor field reconstructions requires advanced regression algorithms. Recently, we developed a novel reconstruction algorithm that incorporates a priori information on the spatial correlation of crystal orientations. This advancement enabled us to achieve unprecedented mapping capabilities, exemplified by the mapping of an aluminum polycrystal deformed to its ultimate tensile strength (32% elongation). Harnessing this measurement capability at such high deformation levels will be crucial for integrating experimental data with micro-mechanical models. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Other |