The 40 degrees[111] orientation relationship has a central role in the
discussion of recrystallisation textures of aluminium. This orientati
on relationship has traditionally been associated with the oriented gr
owth theory, but recent experimental observations indicate a link also
to oriented nucleation. In the present work the importance and unders
tanding of the 40 degrees[111] orientation relationship in recrystalli
sation is discussed. The specific energy of such grain boundaries has
been given special attention.