| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
Intragranular Evolution of Slip System Strength and Activity in Titanium Using Point-Focused High-Energy Diffraction Microscopy |
| Author(s) |
Wenxi Li, Hemant Sharma, Peter Kenesei, Jun-Sang Park, Sidharth Ravi, Orcun Koray Celebi, Daegun You, Tolga Berkay Celebi, Huseyin Sehitoglu, Ashley Bucsek |
| On-Site Speaker (Planned) |
Wenxi Li |
| Abstract Scope |
In-situ point-focused high-energy diffraction microscopy is used to non-destructively capture the deformation behavior of a millimeter-scale grain network in bulk commercially pure titanium with subgrain-scale spatial resolution. The intragranular crystallographic orientation, elastic strain, and slip system activity are tracked as the material is loaded in tension beyond the macroscopic yield point. The results are used to measure intragranular critical resolved shear stress values for prismatic and basal slip systems, which closely align with room-temperature values predicted by density functional theory. The local elastic strain and plastic shear strain maps are also used to investigate the heterogeneous nature of local plastic deformation. Analysis of the principal stress directions reveal that grain boundaries act as barriers to slip, leading to localized stress concentrations and driving stress redistribution. This study provides new insights into intragranular stress states, slip system activity, and grain–grain interactions, advancing the understanding of crystal plasticity in polycrystalline materials. |
| Proceedings Inclusion? |
Undecided |