冷間圧延した多結晶鉄の結晶粒界における{111}方位再結晶粒の形成

抄録

Using transmission electron microscopy and selected area electron diffraction, formation of {111} recrystallized grains at grain boundaries was studied in an Fe-0.02%C alloy cold rolled 75% and isothermally annealed at 773 K. In the as-rolled specimen, it was found that both local orientation changes and inhomogeneous deformation introduced in the neighbourhood of the grain boundary were strongly dependent on the orientations of two grains which bordered each other through this boundary. This resulted in a strong preferred orientation in recrystallized grains formed in the neighbourhood of the grain boundary.
Nucleation of {111} recrystallized grain was found to occur preferentially not only in the grain boundary region of {111}⟨uvw⟩ grain adjacent to {111}⟨110⟩ grain, but also in the grain boundary region of {111}⟨110⟩ grain neighbouring {100}⟨011⟩ grain.