| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Analyzing Mesoscale Stress Localization and Slip System Activation under Axial-Torsional Loading |
| Author(s) |
Jerard Gordon |
| On-Site Speaker (Planned) |
Jerard Gordon |
| Abstract Scope |
While plastic flow under non-uniform deformation has been well-studied using macroscopic analysis, the crystal-scale mechanisms influencing localized deformation under multiaxial strain paths have not been extensively examined. To this end, we performed in-situ high energy diffraction microscopy during solid bar axial-torsional loading to quantify grain-resolved stress states, reorientation, and slip system response in a high-strength, single phase complex concentrated alloy. Overall, von Mises equivalent stress distributions within the sample volume displayed gradient behaviors based on radial position, largely following typical continuum mechanics descriptions. However, no noticeable correlation between grain reorientation and radial position was observed. Comparative analysis of slip system activation in grains with the highest reorientations did not reveal statistically significant increases in the number of active slip systems for axial-torsional loading compared with pure torsion. These findings highlight the complexity of multiaxial load paths on mesoscale response in polycrystals and the need for further advancements in companion modeling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, ICME |