Accession Number:

AD0813887

Title:

STUDY OF THE INTERACTIONS BETWEEN SINGLE POINT DEFECTS AND CLUSTERS OF POINT DEFECTS IN METALS AND THEIR EFFECT ON THE RATE OF PRECIPITATION.

Descriptive Note:

Final summary rept.,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF ENGINEERING

Personal Author(s):

• Sines,George H.

Report Date:

1967-04-01

Pagination or Media Count:

13.0

Abstract:

Some of the specific problems solved were the migration of vacancies and interstitial atoms in an isotropic medium under the elastic interaction to a finite string-cluster, to an infinite string-cluster, to an edge dislocation, and to several disk clusters. The study was then extended to the migration of substitutional atoms to a disk cluster under the elastic interaction in which quenched-in vacancies have formed an atmosphere around the disk under the influence of the elastic interaction. These analyses are limited by the assumption of isotropy of the elastic constants. The extension of the study to anisotropic materials has been started by first considering the interaction between dislocations and point defects in cubic medium. Currently the work is being extended to disk clusters in several hexagonal media. Author

Descriptors:

• (*METALS
• *CRYSTAL DEFECTS)
• METAL CRYSTALS
• ISOTROPISM
• INTERACTIONS
• ELASTIC PROPERTIES
• DISLOCATIONS

Subject Categories:

• Metallurgy and Metallography
• Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE