About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Qualification Methods for Nuclear Reactor Structural Materials
|
| Presentation Title |
Computationally accelerated design of multi-principle-element alloys for plasma facing components |
| Author(s) |
Krishna Chaitanya Pitike, Ishtiaque Karim Robin, Osman El Atwani, Wahyu Setyawan |
| On-Site Speaker (Planned) |
Krishna Chaitanya Pitike |
| Abstract Scope |
Plasma-facing components (PFCs) in fusion reactors must endure extreme thermal loads, neutron damage, and plasma-material interactions while maintaining mechanical integrity at temperatures exceeding 600 °C. Multi-principal element alloys (MPEAs) provide a vast design space for optimizing fusion-relevant materials properties such as high melting point, ductility, and radiation resistance. Focusing on low-activation refractory elements (W, Ti, Cr, V), with a 1% atomic composition increment, we can generate 175,171 unique alloys. To efficiently navigate this space, we develop a computational framework that combines first-principles calculations, physics-based descriptors, and machine learning models trained on computational-thermodynamic data. This approach enables rapid prediction of intrinsic ductility and operational temperature limits, accelerating the identification of candidate MPEAs for fusion applications. We find that at a constant W at. %, sufficient Ti and V are needed to enhance ductility and phase stability but still retain enough Cr to maintain high melting temperatures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Nuclear Materials, High-Entropy Alloys |