| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Nuclear Materials and Fuels with Advanced X-ray and Neutron Techniques
|
| Presentation Title |
Irradiation Effects on Precipitate Distributions in High-temperature Ultrafine-precipitate-strengthened Steel Characterized by Synchrotron Micro-computed Tomography |
| Author(s) |
Alejandro Figueroa, Sri Tapaswi Nori, Peter Kenesei, Jonathan Almer, Maria A. Okuniewski |
| On-Site Speaker (Planned) |
Alejandro Figueroa |
| Abstract Scope |
High-temperature ultrafine-precipitate-strengthened (HT-UPS) steel is considered for application in advanced reactor designs for its strength and creep resistance at elevated temperatures (>600°C). This effect is primarily due to the presence of nanometer sized metal (Ti, Nb, V) carbides along with M23C6¬ (M: Fe, Cr, Mn) precipitates. Synchrotron micro-computed tomography is unique in its ability to conduct three-dimensional geometric and volumetric analyses of second phase particles non-destructively, allowing for same-sample analysis before and after irradiation. By conducting synchrotron micro-computed tomography on both the pre- and post-irradiated conditions, an assessment was conducted on the irradiation-induced effects on the precipitates in HT-UPS steel. The HT-UPS steel samples were irradiated in the High Flux Isotope Reactor to doses of 0.003 and 0.3 dpa. To delineate irradiation behavior from thermal effects, same-sample annealing trials were assessed. imaged in both the pre- and post-irradiated conditions at the Advanced Photon Source. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, High-Temperature Materials |