| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Slip Transfer at Grain Boundaries and Intergranular Fracture in Ti |
| Author(s) |
Eugenia Nieto, Eshan Ganju, Nik Chawla, Javier Llorca |
| On-Site Speaker (Planned) |
Javier Llorca |
| Abstract Scope |
A strategy based on experiments and simulations is presented to ascertain the influence of 3D grain boundary orientation on the deformation mechanisms of pure Ti. Thin foils of commercially pure Ti were subjected to uniaxial tensile loading. The microstructure was characterized by means of laboratory x-ray diffraction contrast tomography (LabDCT) to obtain information about the crystallographic orientation of the grains as well as about the grain boundary geometry on the specimen surface and through the thickness. The occurrence (or not) of slip transfer across the grain boundaries as well as intergranular cracking was ascertained in more than 300 grain boundaries from slip trace analysis coupled with high-resolution digital image correlation on the surface of deformed specimens. In parallel, the mechanical behaviour of the polycrystals was simulated with a dislocation-based crystal plasticity model where fracture was included by means of cohesive surfaces at the grain boundaries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, Characterization |