Coble creep, cavity sintering, and cavity growth

Conference · Thu Dec 31 23:00:00 EST 1987

OSTI ID:6979807

Schneibel, J H; Martinez, L

The close relationships between Coble creep, cavity sintering and cavity growth are discussed. The measurement of size distributions of crack-like cavities is useful for determining grain boundary and surface diffusivities. In nickel aluminide (Ni/sub 3/Al) intermetallics the grain boundary diffusivity determined in this manner agrees well with that obtained from Coble creep measurements. A critical comparison of the zero-creep technique and the ''zero-growth'' technique (critical cavity radius determination) to measure surface free energies is given. 20 refs., 6 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6979807
• Report Number(s): CONF-8805164-1; ON: DE88013846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CAVITIES
CREEP
CRYSTAL STRUCTURE
DEFECTS
DIFFUSION
EQUATIONS
FABRICATION
GRAIN BOUNDARIES
INTERMETALLIC COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
SINTERING