About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Materials Kinetics and Mechanisms Under External Forcing-Driven Conditions
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| Presentation Title |
Radiation Resistance and Microstructural Evolution of Nanocrystalline Fe-Ti and Fe-Ta Systems Under Ion Irradiation |
| Author(s) |
Alice E. Perrin, Erik G. Herbert, Amrita Anand, Wei Tang, Miguel Crespillo, Matt Boebinger, Jon Poplawsky, 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 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 understand and quantify the relative contributions of grain size, solute additions, and radiation-induced microstructural changes 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 |
Characterization, Nuclear Materials, Process Technology |