| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Tribological Stress Field Model Validation by Using Deformation Twins as Probes |
| Author(s) |
Antje Dollmann |
| On-Site Speaker (Planned) |
Antje Dollmann |
| Abstract Scope |
Tribological loading changes the microstructure of the materials in contact, e.g. grain refinement occurs. The stress field has to be known for the analyses of the crystallographic systems carrying plasticity. So far, the stress field is unknown. Our approach combines experiments and FEM simulations. The experiments are conducted on metallic single-crystals and resulting in deformation twins in only some crystal orientations. The FEM was used to calculate stress fields with the experimental parameters while varying yield stress, work hardening behaviour and plastic anisotropy. These stress fields were used to calculate the resolved shear stresses on the twin systems in the experimentally investigated crystal orientations. If the twin systems with the highest calculated resolved shear stresses arise on the experimentally identified twin systems, the stress field is presumed to be valid. This is the first study with a systematic investigation of the required complexity of the stress field. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Modeling and Simulation |