The texture evolution of electrodeposited nanocrystalline nickel with an initial grain size of 20 nm during pack rolling is quantitatively investigated. For both the roll-bonding side and non-roll-bonding side, the volume fractions of {001}<100> and {001}<110> components decrease with increasing equivalent strain, whereas those of {110}<001>, {110}<112>, {112}<110>, and {123}<634> components increase. This phenomenon is different from the texture evolution of conventional single-sheet rolled nanocrystalline nickel. However, the roll-bonding side and non-roll-bonding side behave quite differently. The deformation texture in the roll-bonding side at a high strain is characterized by the presence of strong {110}<001>, {110}<112>, {112}<110>, and {123}<634> and components, whereas a significant decrease in the {001}<100> and {001}<110> components. A cubic component having a volume fraction of 8% remains found in the non-roll-bonding side for the sample deformed to the largest strain of εVM=0.611. Detailed analysis suggests such a remnant of the original cube component can be primarily attributed to partial dislocation slip and grain coarsening. |
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