THE IMPORTANCE OF GRAIN-TO-GRAIN INTERACTION DURING ROLLING DEFORMATION OF COPPER

The directional microstructure which develops in about 50% of the grai ns in rolled copper-the 'high wall density' (HWD) structure, may be us ed as an indicator for the importance of the interaction between speci fic grains with their specific crystallographic orientations. For inst ance it is found that the grains which develop the HWD structure are n ot selected on the basis of their crystallographic orientation. Also i t was observed that the geometrical orientation of the dislocation wal ls may deviate very significantly from the 'ideal' orientation. Both o bservations demonstrate a strong grain-to-grain interaction. (C) 1997 Elsevier Science S.A.