Abstract
Development of sharp {111} recrystallization texture in polycrystalline iron can not be explained by simply synthesizing the results obtained so far on single crystals. Since this strongly suggests that this phenomenon is related with the presence of grain boundaries, it was tried to clarify the origin of this texture component by studying the rolling and recrystallization textures of polycrystalline specimens having sharp initial textures.
It was found that the interaction between differently oriented neighbouring grains during rolling was quite aniotropic. This suggested that orientations of recrystallized grains nucleated near grain boundary should not be random. It was further suggested that, if the stable end orientations of two neighboring grains were the same, their boundary regions were forced during rolling to rotate into these common end orientations, so that stress and strain compatibilities could be satisfied concurrently. Since these regions are highly strained, they could provide recrystallization nuclei. Such interactions among the members of fiber texture having <111> axes parallel to the normal direction would produce highly strained regions having {111}<110> common end orientations. Among them, the interaction between {111} <112> and {111} <110> initial orientations provided the most potential nuclei of {111} <110> recrystallization texture which is typically found in the commercial Al-killed steel.
