Berkovich nanoindentation study of 16 nm Cu/Nb ARB nanolaminate: Effect of anisotropy on the surface pileup

Nanoindentation is widely used to investigate elastic modulus, hardness and work hardening behaviour of nano- micro-scale laminates. In this work, 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate as a test material due its interfacial anisotropy owing the presence contrasting interfaces along rolling (RD) transverse direction (TD). was performed TD well RD ARB nanolaminate, then scanning probe microscopy (SPM) data were collected measure pileup TD. Nanolaminate found show higher surface than which attributed crystallographic resulting in (a) yield strength (low plasticity) comparison (b) high sliding case less co-deformation layers RD. The characterization significant importance for facilitating study anisotropic micro/nanolaminates.