About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Qualification Methods for Nuclear Reactor Structural Materials
|
| Presentation Title |
High-Throughput Synthesis and Characterization of Refractory High Entropy Alloys for Fusion Applications |
| Author(s) |
Semih Can, Samuel Ifada, Deniz Ebeperi, Brent Vela, Benjamin Diaz, Roopam Jain, Lin Shao, George M. Pharr, Raymundo Arroyave, Ibrahim Karaman |
| On-Site Speaker (Planned) |
Semih Can |
| Abstract Scope |
Fusion reactors demand materials that withstand extreme temperatures and irradiation. Refractory high-entropy alloys (RHEAs) show promise due to their thermal stability, irradiation tolerance, and mechanical strength. We have developed an iterative high-throughput (HTP) synthesis and characterization framework to synthesize and evaluate reduced-activation RHEAs, enabling alloy discovery and screening at a high pace. Alloy discovery is guided by Batch-wise Bayesian Optimization with irradiation tolerance filters, targeting W, Ti, V, Cr, Re, and Fe elemental space. Elements are chosen for their reduced-activation and radiation tolerance. Alloys are arc-melted, homogenized, and characterized through microstructural analysis, hardness, and compression testing. Self-ion irradiation is followed by assessments of thermal conductivity, swelling, and hardening. Batchwise processing allows rapid evaluation of multiple compositions, accelerating material discovery for structural and plasma-facing components in fusion systems. The best performing alloys are identified and further characterized. The challenges associated with the HTP alloy synthesis for fusion environments will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Nuclear Materials, Characterization |