首页|Effect of annealing temperature on the microstructure and mechanical properties of laves phase reinforced FeCrAl alloy thin-walled tubes
Effect of annealing temperature on the microstructure and mechanical properties of laves phase reinforced FeCrAl alloy thin-walled tubes
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NSTL
Elsevier
FeCrAl alloy has great application potential to replace traditional zirconium alloy as an accident-tolerant fuel (ATF) candidate material. In this study, Fe-13Cr-4Al-2Mo-0.65Nb-0.4Ta alloy was prepared into a thin-walled tube with a diameter of 9.5 mm and a wall thickness of 0.35 mm by cold rolling. The effects of different annealing temperatures on the microstructure morphology, texture growth direction, and me-chanical properties of FeCrAl alloy were studied., alloy underwent recovery and recrystallization with increasing annealing temperature, and the grain size increased. The theoretical calculation showed that the pinning action of Fe2Mo4C and Fe2Nb increased the dislocation density, and the interaction with the dislocation increased the room temperature strength. The addition of Ta led to the formation of more second-phase precipitates at the grain boundary, which hindered the growth and refined grains. The high-temperature stable second phase provided sufficient temperature strength for the alloy.(c) 2022 Elsevier B.V. All rights reserved.
NSTL
Elsevier
