| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
H-60: Radiation Damage Mechanisms in the Oxides Formed on Zr Alloys |
| Author(s) |
Junliang Liu, Guanze He, Anamul Haq Mir, Jing Hu, Stephen Donnelly, Meimei Li, Sergio Lozano-Perez, Chris Grovenor |
| On-Site Speaker (Planned) |
Junliang Liu |
| Abstract Scope |
The structure of the complex nanoscale oxides formed on Zr alloys by aqueous corrosion can directly affect the corrosion performance, especially under neutron irradiation. In this work, we have used in-situ TEM and transmission-EBSD to study radiation damage mechanisms in the oxides formed on Zr alloys. The aim has been to determine the relative stability of the different oxide phases formed by corrosion. We report for the first time on the susceptibility to radiation damage of the suboxide phase which may influence the nucleation of new oxide grains and the transportation of oxidation species across the oxide/metal interface, and lead to enhanced corrosion rates. A monoclinic-to-cubic transformation of the bulk oxide is also observed by in-situ experiments, followed by irradiation-induced grain growth. The formation of cubic oxide phase thus needs to be considered as a possible process that can occur at high burnups, and further affect the corrosion rates. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |