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:

1971-06-01

Pagination or Media Count:

28.0

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