| About this Abstract |
| Meeting |
2016 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
|
| Presentation Title |
Correlative and Dynamic S/TEM Characterization of Heavily Irradiated Pyrochlores and Fluorites |
| Author(s) |
Terry G Holesinger, Sanchita Dey, Jeffrey A. Augiar, Pallas A. Papin, James A. Valdez, Yongqiang Wang, Blas P. Uberuaga, Ricardo H.R. Castro |
| On-Site Speaker (Planned) |
Terry G Holesinger |
| Abstract Scope |
Irradiation is a ubiquitous method for altering materials to examine their structural and functional processes. Here we present our work on heavy-ion irradiated (Kr+, 400 keV, room temperature) Ga2Ti2O7 and Ga2Zr2O7 pryochlores and nanostructured yttria-stablized zirconia (YSZ). For the pyrochlores, the differences in the resulting microstructures between the Ga2Ti2O7 (amorphous) and Ga2Zr2O7 (fluorite) and the stability of these structures and associated defects were determined before and after subsequent annealing. The nanostructured YSZ (10 at.%) was characterized for the observed grain growth and crack structures in the irradiated region and the stability of this structure upon further heating. Conventional and in situ (S)TEM were used to characterize the materials to track the structural stability and examine the evolution of microstructures at elevated temperatures. Of particular interest was the stability of the materials, defects within the Kr implanted region, and transient effects as the materials were raised in temperature. |
| Proceedings Inclusion? |
Planned: A print-only volume |