About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Simulation of Systematic Concentration Variation in CrTaVW High Entropy Alloys |
Author(s) |
Bochuan Sun, Enrique Martinez Saez, Osman El Atwani, Duc Nguyen-Manh, Jan Wróbel |
On-Site Speaker (Planned) |
Bochuan Sun |
Abstract Scope |
Compared to tungsten (W), a traditional plasma-facing material (PFM), the high entropy alloy W38Ta36Cr15V11 demonstrates a significantly higher resistance to Helium (He) bubble formation, while the drawback is the high order-disorder transition temperature (ODTT). To aid in the improvement and design of novel refractory high entropy alloys (HEAs) for PFMs, we systematically calculated the thermodynamic properties and Warren-Cowley short-range order (SRO) parameters of different CrTaVW HEAs. The concentration range for each element varied from 10% to 70%, with increments of 10%. The cluster expansion method was employed due to its superiority in revealing configurational effects. From the enthalpy of mixing and SRO parameters, we calculated the ODTT for each composition. Additionally, the CALPHAD method was used to predict the tetrahedral phase diagram. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Nuclear Materials, Computational Materials Science & Engineering |