About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Remarkable Ion Irradiation Response of Nanocrystalline Low-Activation W-Ti-Based Compositionally Complex Alloys |
| Author(s) |
Skye Supakul, Ishtiaque Robin, Eda Aydogan, Bochuan Sun, Matthew Vigil, Kayla Yano, Shalini Tripathi, James Haag, Wei-Ying Chen, Benjamin Derby, Dan Thoma, Enrique Martinez, Osman El-Atwani |
| On-Site Speaker (Planned) |
Skye Supakul |
| Abstract Scope |
Compositionally complex alloys (CCAs) have recently been proposed as candidates for structural nuclear materials. In this work, novel low-activation W-Ti-based CCA systems have been designed and synthesized. Preliminary investigations on two nanocrystalline CCA thin films – single-phase BCC ternary W–Ti–V and quaternary W–Ti–Cr–V CCAs – included both in-situ heating to 900 °C and in-situ dual-beam ion (16 KeV He+ and 1 MeV Kr+2) irradiation investigations at 900 °C. After exposure to 900 °C with and without ion irradiation both systems exhibited negligible grain growth and observed compositional segregation behavior in excellent agreement with atomistic modeling. Small (≤ 1 nm) cavities distributed throughout the film were observed with no radiation induced loop formation post dual-beam ion irradiation up to ~13 dpa. These responses are comparable to many other candidate material systems, while also serving as low activation alternatives to W and W-based alloys for structural nuclear materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Thin Films and Interfaces |