| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
8th World Congress on Integrated Computational Materials Engineering (ICME 2025)
|
| Presentation Title |
Phase Field Simulation of Segregation in Single Crystal Ni-Based Superalloys and Its Influence on Creep Properties |
| Author(s) |
Sean Böhm, Andre Borsatto Baldissera |
| On-Site Speaker (Planned) |
Sean Böhm |
| Abstract Scope |
Ni-based superalloys exhibit inhomogeneous microstructures dependent from the manufacturing route, thus resulting in inhomogeneous properties such as tensile strength and creep strength. Hence, combined FEM and phase-field simulation models are developed. The simulation models allow to determine the influence of casting parameters and subsequent heat treatment parameters on local microstructures of Ni-based superalloys. The combined simulation models are calibrated on the Ni-based superalloy CMSX4. CMSX4 contains gamma‑prime‑forming elements Al, Ti and Ta, which segregate in the interdendritic regions, and slow diffusing elements Re or W, which segregate in the dendrites. The segregations influence the solid solution hardening and gamma‑prime precipitate structure, resulting in local differences in crystal properties. The combined simulation models predict local i.e. position dependent creep properties as well as global creep properties. The combined simulation models thus establish a link between process and heat treatment parameters and creep properties. |
| Proceedings Inclusion? |
Undecided |