Interfacial structure of nanostructured Cu-Nb filamentary composite fabricated by the bundling and drawing process

摘要

A high-resolution electron microscope (HREM) has been used to study the interfacial structure of Cu-Nb filamentary composites fabricated by the bundling and drawing process. At the matrix/filament interface, misfit interface dislocations were introduced periodically to relieve the misfit strain. The spacing_between interfacial misfit dislocations for the interface between (lll)-(Cu) and (101)-(Nb) planes was observed to vary with the local tilt angle of the interface. The moire fringes appeared in association with interfacial dislocations and the spacing between moire fringes was found to be quite close to that between interfacial dislocations.