| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Methods, Techniques, and Materials Discovery of Irradiation Effect Using In-situ Microscopy
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| Presentation Title |
Understanding the Amorphization Limit in Irradiated Ceramics via Repeated In situ Recrystallization Experiments |
| Author(s) |
Nathan Madden, Matthew Janish, Wei-Ying Cheng, Meimei Li, Blas Uberuaga, Jessica A. Krogstad |
| On-Site Speaker (Planned) |
Jessica A. Krogstad |
| Abstract Scope |
In situ irradiation has been a powerful tool for experimentally probing the amorphization limit in a range of materials, especially pyrochlore-based ceramics. However, visual inspection of electron diffraction patterns is somewhat subjective and may overlook residual, localized structural motifs that cannot be rigorously determined solely via traditional electron diffraction techniques. The presence and importance of such localized order will be demonstrated in single crystal gadolinium titanate (Gd2Ti2O7) specimens. A combination of in situ heating and ion irradiation are leveraged to understand the impact of residual (dis-)order on the recrystallization behavior and subsequent radiation tolerance. Repeated cycling between the amorphous and crystalline states revealed that both the recrystallization temperature and amorphization threshold are dependent on the sample history. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Nuclear Materials |