| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Sustainability of High Temperature Alloys
|
| Presentation Title |
Phase-field-informed micromechanical approach to creep behavior in Ni-based single-crystal superalloys at the dendritic scale |
| Author(s) |
Jose Dominic, Jean-Briac le Graverend |
| On-Site Speaker (Planned) |
Jose Dominic |
| Abstract Scope |
While there have been numerous efforts to model the microstructural evolution and damage of superalloys at the γ/γ’ scale and in the macroscopic scale using phase field, crystal plasticity and finite element methods among others, studies on the dendritic/interdendritic scale are relatively lacking. It has been found through experiments that commercial superalloys exhibit bimodal mechanical properties at this scale, owing to the compositional difference between dendritic and interdendritic regions. In this project, we quantify the effect of microsegregation, and inhomogeneity in mechanical properties between the dendritic and interdendritic regions in cast single-crystal superalloys. High-temperature creep performance through a lattice-dependent crystal plasticity framework, will allow us to quantify any size effect that could be further used to determine minimal wall thickness in engine components for improved thermomechanical performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, High-Temperature Materials |