On the origin of recrystallization textures

The development of recrystallization textures has been debated for the past 50 years. Essentially the rival theories of evolution of recrystallization textures i.e, oriented nucleation (ON) and oriented growth (OG) has been u nder dispute. In the ON model, it has been argued that a higher frequency o f the special orientation (grains) than random occur, thus accounting for t he texture. In the OG model, it has been argued that the specially oriented grains have a high mobility boundary and thus can migrate faster and grow to a larger size as compared to random orientations thus contributing to th e final recrystallization texture. In FCC metals and alloys like aluminium, cube orientation [(001)[100]] is t he recrystallization texture component. In the classic OG model, cube orien tation is supposed to be misoriented from S-orientation [(123)[63 (4) over bar]] which is a deformation texture component by a 40 degrees about [111] relationship which is supposed to be a high mobility boundary leading to fa ster growth of cube grains. Stereographic calculations and analytical calcu lations are presented in this paper to the effect that the S-orientation (1 23)[63 (4) over bar] is not misoriented from cube (100) [001] by 40 degrees (111) whereas another deformation texture component (123)[41 (2) over bar] which is termed the X-component is misoriented from cube component by 40 d egrees [111], R-component is also seen in deformation textures of aluminium and hence the classic OG model remains valid with respect to the R-compone nt.