Accession Number : AD0885888

Title :   Local Stability of Imperfect Anharmonic Lattice Systems: Cell-Cluster Analysis of Lattice with Coincidence Boundaries.

Descriptive Note : Special technical rept. no. 5,

Corporate Author : ILLINOIS INST OF TECH CHICAGO

Personal Author(s) : Miller, C. Grant ; Larsen, Russell D.

Report Date : JUN 1971

Pagination or Media Count : 28

Abstract : A cell-cluster analysis is described for a system of interacting rigid disks on a close-packed lattice containing a coincidence boundary. The relative stability of this system is compared to the defect-free hexagonal lattice. Through second order the authors have obtained a linearized polytope bound to Q2. The complexity of the lattice subfigures precludes carrying the analysis beyond second order. It is suggested that near close packing a coincidence boundary may locally stabilize a lattice. (Author)

Descriptors :   (*CRYSTAL LATTICES, STABILITY), (*FRACTURE(MECHANICS), GRAIN BOUNDARIES), (*EMBRITTLEMENT, THEORY), CRYSTAL DEFECTS, STATISTICAL MECHANICS, MICROSTRUCTURE, FREE ENERGY.

Subject Categories : Properties of Metals and Alloys
      Crystallography
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE