|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Impact Toughness of Model and Commercial FeCrAl Alloys
||Zhiqian Sun, Yukinori Yamamoto
|On-Site Speaker (Planned)
Nuclear-grade FeCrAl alloys are under development for accident-tolerant fuel cladding in light-water reactors. In this study, the impact toughness of FeCrAl alloys was evaluated using Charpy tests in a temperature range from RT to 600 °C as functions of alloy compositions, microstructures (e.g., grains and texture), and processing conditions. Commercial powder-metallurgy APMT alloys and newly-developed wrought FeCrAl alloys were selected as test materials. Various thermomechanical treatments were applied to control their microstructures. All alloys showed limited impact absorbed energies at RT with totally brittle characteristics. Some alloys showed a ductile-brittle transition temperature at ~200 °C. Coupling the Charpy impact data with microstructural details led to identification of the controlling factors for the impact toughness of FeCrAl alloys which provides guidelines for further alloy and process development for improved properties. Research sponsored by US DOE, Office of Nuclear Energy, Advanced Fuel Campaign of the Fuel Cycle R&D program.
||Planned: Supplemental Proceedings volume