|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Oxidation Behavior of FeCrAl Alloys at T= 300-600C for 100-1000 Hours
||Nan Li, Scott Parker, Elizabeth Wood, Andy Nelson
|On-Site Speaker (Planned)
Iron-chromium-aluminum (FeCrAl) alloys have seen limited historic use as light water reactor (LWR) applications, but renewed modern interest as a technology capable of improving performance under accident conditions. Aging treatments were performed on a commercial FeCrAl alloy, Kanthal APMT, for 100-1000 hours in stagnant air at 300, 400, 500, and 600 °C. The aim of this work is to assess the potential for growth of a coarsened Al2O3 layer to form that would inherently immobilize tritium during LWR operation. The authors have discovered that the oxide growth behavior under the investigated conditions follows logarithmic time dependence. When the oxidation temperature increases to 500 °C or above Mo segregation at grain boundaries has been observed. Additionally crystalline Al2O3 formation is noted at T>500C. The results of this study can then be viewed as a bounding result for potential oxide coarsening during operation.
||Planned: Supplemental Proceedings volume