Abstract
Secondary recrystallization of Fe-3%Si alloy containing AlN and MnS precipitates, which is usually given a heavy reduction at the final cold-rolling stage, was investigated with special reference to an influence of annealing of hot-rolled band before first cold rolling. In the annealing process of hot-rolled band, fine carbides or nitrides with 10∼20 nm in diameter precipitated, resulting in increasing the dislocation density with tangling dislocations around those precipitates. Accordingly, on the annealing stage after the first cold-rolling, the recrystallized microstructure was finer and more homogeneous. In addition, a decrease in {211}⟨011⟩∼{100}⟨011⟩ (RD\varparallel⟨011⟩) oriented grains and an increase in {111}⟨112⟩ ones occurred. Annealing of hot-rolled band is probable to have an important effect on enhancement of {110}⟨001⟩ secondary recrystallized grain growth, because of more {111}⟨112⟩ primary recrystallized grains, which has Σ9 coincidence orientation relationship to the {110}⟨001⟩ orientation.
