Question

What effect does cold rolling have on the orientation of (111) and (200) planes relative to the surface of the sample?

Answer 1

The dynamics of the release of stored energy during annealing along two different crystallographic planes i.e.{111} and {220} in deformed copper have been investigated using in-situ X-ray diffraction measurements at 458K and 473K respectively.What effect does cold rolling have on the orientation of (111) and (200) planes relative to the surface of the sample.The deformed Cu samples have been used to understand the kinetics of the release of stored energy along different crystallographic planes during the annealing process. The microstructure was characterised using EBSP which revealed irregular grain boundaries with increasing deformation. The microstructural parameters as evaluated using XRDLPA technique showed a decrease in domain size whereas the microstrain remained almost constant. The overall stored energy was found to increase with deformation. The stored energy along the different crystallographic planes was evaluated using the modified Stibitz formula and it was seen that the accumulation of stored energy is much higher in {111} set of planes compared to the other planes. The kinetics of the release of the stored energy along the {111} and {220} set of planes were followed using in-situ XRD measurements carried out at 458K and 473K on the deformed samples.