The effect of crystal orientation on the recovery and recrystallization of cold-rolled Ni
(99.96% purity) has been investigated. Particular attention was paid to the annealing response of
regions with either the Copper (C), Brass (B) or S rolling texture orientations. Samples with an
initial average grain size of approx. 500μm were deformed to strains of up to εvM = 4.5. As a result
of the large initial grain size, even after high rolling reductions it is possible to find sufficiently large
regions of material with similar crystal orientation to analyze the recovery and recrystallization
behaviour as a function of crystal orientation. Microstructural investigations were carried out in the
scanning electron microscope using both electron channeling contrast and electron backscatter
diffraction orientation mapping. Both the S and C orientation regions exhibit a heterogeneous
microstructure containing bands of localized deformation. The presence of volumes surrounded by
high angle boundaries in these regions strongly influences both the recovery and recrystallization
behaviour of the material. Twinning was observed also to play an important role in the generation of
recrystallized grains, with twin chains of up to 3 generations being observed.
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