NSUF 17-1099: In Situ Transmission Electron Microscopy Study of Radiation Damage Effects on the d-Hydride Microstructure in Irradiated Zircaloy-4
Hydride formation is one of the major embrittling mechanisms for zirconium-based nuclear fuel cladding alloys during in-pile service and out-pile storage/transportation conditions. The radiation-induced dislocation loops are favorable sites to form hydrides and affect their stacking structure. The root cause of the d-hydride stacking behavior is still unknown for cladding. We propose that radiation-induced loops enhances the d-hydride stacking behavior and the phenomena can be studied by post-irradiation characterization of irradiated cladding using TEM with in situ heating/cooling. Sample is available at ORNL’s LAMBDA facility. Microstructural characterization will be performed using the FEI Talos S/TEM optimized for elemental characterization. Ambient and high temperature characterization will be conducted to determine hydride precipitation sites, hydride stacking behavior, dislocation structure and irradiation-induced features. The developed state-of-art techniques will also be applicable to advanced cladding microstructure examinations. The proposed experiments will be the cutting-edge experiments and will leverage the capabilities of NSUF.
Papildoma informacija
| Laukas | Reikšmė |
|---|---|
| Awarded Institution | Electric Power Research Institute |
| Embargo End Date | 2026-02-27 |
| Facility Tech Lead | Jeff Terry, Kory Linton |
| NSUF Call | FY 2017 RTE 3rd Call |
| PI | Cem Topbasi |
| Project Member | Dr. Philip Edmondson - University of Manchester (https://orcid.org/0000-0001-8990-0870) |
| Project Member | cem topbasi - Electric Power Research Institute |
| Project Member | Dr. Mahmut Cinbiz - Oak Ridge National Laboratory (https://orcid.org/0000-0003-4626-8515) |
| Project Notes | Awarded on 09/20/2017 |
| Project Type | RTE |
| Publication | Microbeam X-ray Absorption Near-edge Spectroscopy of Alloying Elements in the Oxide Layers of Irradiated Zircaloy-2 Arthur Motta, Aylin Kucuk OSTI.gov, None 2018-01-01 https://www.osti.gov/servlets/purl/1468942 |
| Publication | Microbeam X-ray Absorption Near-edge Spectroscopy of Alloying Elements in the Oxide Layers of Irradiated Zircaloy-2 Arthur Motta, Aylin Kucuk Conference: 18th International Symposium on Zirconium in the Nuclear Industry 2016-05-15 - 2016-05-19 |
| Publication | Energetic particle irradiation study of TiN coatings: are these films appropriate for accident tolerant fuels? Philip Edmondson Journal of Nuclear Materials 512 2018-12-01 https://www.sciencedirect.com/science/article/pii/S0022311518310432 |
| RTE Number | 1099 |