Accession Number : AD0766159

Title :   Dislocated Cellular Structures.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS

Personal Author(s) : Morral,J. E. ; Ashby,M. F.

Report Date : JUL 1973

Pagination or Media Count : 37

Abstract : When grains or cells form periodic structures their arrangement can contain dislocations. These defects and their movements are illustrated on lattice graphs for two and three dimensional systems. The lattice graph is topologically equivalent to the cellular structure, containing information on the number of faces, edges and corners of each cell, yet it is easier to use than the cellular structure when illustrating dislocation climb or glide. Several examples of cellular dislocation motion are described in detail and their motion is related to grain growth cell division and deformation by grain-boundary sliding. (Author)

Descriptors :   (*DISLOCATIONS, MOTION), (*GRAIN BOUNDARIES, MOTION), CREEP, DEFORMATION, POROUS MATERIALS, CRYSTAL DEFECTS

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE