Origins of planar, concave and convex boundaries during exaggerated grain growth. Revision

Conference · Tue Oct 01 00:00:00 EDT 1985

OSTI ID:5284760

Searcy, A W

A new surface thermodynamic theory is used to show that exaggerated grain growth is driven by reductions in grain boundary and dislocation free energies produced when a larger grain sweeps out a volume element formerly occupied by small grains. Whether the advancing boundary is planar, concave, or convex depends on the relative rates of ledge nucleation and growth, on the growth direction, and on whether growth occurs at screw dislocations.

• Research Organization: Lawrence Berkeley Lab., CA (USA). Materials and Molecular Research Div.; California Univ., Berkeley (USA). Dept. of Materials Science and Mineral Engineering
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5284760
• Report Number(s): LBL-20524-Rev.; CONF-861049-1-Rev.; ON: DE86007500
• Resource Relation: Conference: 38. Pacific Coast Regional meeting, Irvine, CA, USA, 29 Oct 1986; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GRAIN GROWTH
DISLOCATIONS
GRAIN BOUNDARIES
THERMODYNAMICS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
LINE DEFECTS
MICROSTRUCTURE
360000* - Materials