| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments III
|
| Presentation Title |
Radiation Resistance of Nanocrystalline Fe-Ti and Fe-Ta Systems Under Ion Irradiation |
| Author(s) |
Alice E. Perrin, Erik Herbert, Amrita Anand, Wei Tang, Miguel L. Crespillo, Matt Boebinger, Khalid Hattar |
| On-Site Speaker (Planned) |
Alice E. Perrin |
| Abstract Scope |
Friction stir processing was used on the surfaces of three coarse-grain bulk Fe samples to induce severe plastic deformation and grain refinement down to the nanocrystalline scale. Nanocrystalline Fe-1at%Ta and Fe-6at%Ti alloys, which are both thermodynamically stabilized through solute segregation to grain boundaries, were processed along with a pure Fe control sample. The coarse-grained and nanocrystalline microstructures of each system were subjected to 11 MeV Au irradiation up to 10 dpa. Pre- and post-irradiation microstructures were characterized using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). Nanohardness measurements performed before and after irradiation were used to quantify the relative contributions of grain size, solute additions, and irradiation embrittlement to the overall hardness of each system. The effects of irradiation on each system and the relevance of the results to nuclear materials design and development will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Iron and Steel |