b'ODS FeCrAl Tube Production and CharacterizationPrincipal Investigator: Caleb P. Massey, ORNLTeam Members/ Collaborators: Sebastien N. Dryepondt, Maxim N. Gussev, Philip D. Edmondson and Kory D. Linton (ORNL)Figure 1. Stress-strain curves ofD FeCrAl alloys have becomediameter) oxide precipitates serve as ODS FeCrAl tubes as a function ofstrong candidates forsinks for defects generated during processing and heat treatment. accident tolerant fuel (ATF)radiation damage events, consequently cladding in light water reactor (LWR)decreasing the irradiation-induced designs due to their superior highhardening of ODS FeCrAl alloys temperature strength and oxidationduring normal reactor operating resistance in comparison to existingconditions. These precipitates also Zr-based alloys. As part of an ongoingserve as obstacles to dislocation initiative to further improve upon themotion within the microstructure, accident tolerance of the FeCrAl alloyleading to increased high temperature system, advanced oxide dispersionstrength in comparison to wrought strengthed (ODS) FeCrAl alloys areFeCrAl variants.being studied that have the potentialThe ultimate objectives of the current to simultaneously increase theresearch on the ODS FeCrAl system strength and irradiation resistanceare to (1) develop thermomechanical of this ferritic alloy system. A highprocessing routes that provide number density of nanoscale (~6 nmthe microstructures that provide 90 2019|AFC ACCOMPLISHMENTS'