多結晶鉄の {111} 再結晶集合組織形成機構

抄録

Since the remarkable development of {111} recrystallization textures in polycrystalline iron has not successfully been explained by the results obtained so far on single crystals, it was tried to clarify the original these textures by studying rolling and recrystallization textures of polycrystalline specimens having sharp initial textures and by observing their microstructures.
It was found that interactions between differently oriented neighbouring grains during cold rolling were so anisotropic that non-random grain boundary nucleation of recrystallized grains could be expected.
Furthermore, it was suggested that, if the stable end orientations of two neighbouring grains were common, their boundary regions might be forced during cold rolling to rotate in these orientations, so that stress and strain compatibilities could be satisfied concurrently, creating highly strained regions, which could provide recrystallization nuclei.
Although such interactions are considered to occur among the members of <111>//ND fiber textures, whose common end orientation is {111} <110>, grain boundary regions of {111} <112> grains adjascent to {111} <110> suffer from the severest strain, rotating in {111} <110> orientation. These regions seem to be the origins of {111} <110> recrystallization textures typically found in Al-killed steel.