Observations of Dislocations in Cu/Nb Nanolayer Composites After Deformation Academic Article uri icon

abstract

  • Dislocations have been observed in deformed Cu/Nb nanolayer composites of wavelength 17 and 7 nm. The dislocations thread through the Cu/Nb interfaces even though there is a change of Burgers vector. Conventional and high resolution transmission electron microscopy studies show that the in-plane bowing direction of these dislocations in the Cu layers is opposite to that in the Nb layers, so that the dislocations appear to zig-zag. These observations are explained by the presence of residual tensile stresses in Cu and residual compressive stresses in Nb, which make dislocations bow in opposite directions in the alternating layers.

published proceedings

  • Journal of Materials Research

author list (cited authors)

  • Lu, Y., Kung, H., Griffin, A. J., Nastasi, M. A., & Mitchell, T. E.

citation count

  • 21

complete list of authors

  • Lu, Y-C||Kung, H||Griffin, AJ||Nastasi, MA||Mitchell, TE

publication date

  • August 1997