Abstract
The effects of Mo and Nb additions on the microstructure and mechanical properties of two FeCrAl alloys were studied. Fine and uniform recrystallized grain structures (~20–30μm) were achieved in both alloys through suitable annealing after warm-rolling. The formation of Fe2Nb-type Laves phase precipitates in the Nb-containing FeCrAl alloy effectively stabilized the deformed and recrystallized microstructures. The Mo-containing FeCrAl alloy exhibited strong γ texture fiber after annealing at 650–900°C, whereas the annealed Nb-containing FeCrAl alloy had much weaker texture. Both strength and ductility decreased as the grain size increased in both alloys.
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