| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
Influence of Ion Species on Radiation Damage Evolution in Refractory High Entropy Alloys |
| Author(s) |
Emily H. Mang, Annie Barnett, Daniel L. Foley, Wei-Ying Chen, Michael L. Falk, Jaime Marian, Mitra L. Taheri |
| On-Site Speaker (Planned) |
Emily H. Mang |
| Abstract Scope |
Refractory high-entropy alloys (RHEAs) have been proposed for the next generation of plasma-facing components in fusion reactors due to outstanding high-temperature strength and radiation tolerant properties. While recent efforts support conclusions that RHEAs exhibit residual damage reduction under radiation, dynamic experimental perspectives regarding defect formation and propagation remain limited. This study investigates Mo-based alloys with varying degrees of chemical complexity to gauge the interplay of increasing solute effects under radiation. Ultimately, we probe defect evolution in RHEAs through in situ transmission electron microscopy experiments. By manipulating ion irradiation species and inducing unique point defect biases, we recognize striking impacts on global lattice distortion and mechanisms of defect annihilation dependent on radiation condition. The objective of this work is to discuss the microstructural implications of altering defect mobility in complex alloys, offering insight to dynamic lattice effects of RHEAs in fusion environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, Nuclear Materials |