About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
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| Presentation Title |
Multiscale Irradiation-induced Ordering in Metal Oxides |
| Author(s) |
Janelle P. Wharry, Hui Xiong, Tristan Olsen, Cyrus Koroni, Andy Lau, Dewen Hou, Chao Yang, Caleb D. Clement, Khalid Hattar, Yongqiang Wang, Wei-Ying Chen |
| On-Site Speaker (Planned) |
Janelle P. Wharry |
| Abstract Scope |
The objective of this talk is to understand irradiation-induced multiscale ordering – from crystallization to hierarchical nanostructuring – in metal oxide ceramics. Irradiation is generally understood to create disorder in materials; in fact, irradiation-induced amorphization of ordered intermetallics and ceramics is a well-established phenomenon. But there is growing evidence supporting irradiation-induced self-organization of extended defects such as bubble superlattices. This talk will further investigate irradiation-induced ordering phenomena across the length scales ranging from atomic- through micro-scale, focusing specifically on titania (TiO2). At the nano/micro-scale, we will discuss irradiation-induced hierarchical ordering in single crystal anatase TiO2. This hierarchical structure is comprised of bubble superlattices within a multi-layered damage structure of dislocation loops and nanocrystallites. Subsequently, at the atomic scale, we will discuss irradiation-induced crystallization of amorphous TiO2 nanotubes, and their effect on morphological stability. Proposed irradiation-induced ordering mechanisms will be discussed in the context of metal oxide functionality. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Nanotechnology, Phase Transformations |