A study of intergranular cavity growth controlled by the coupling of diffusion and power law creep

Journal Article · Wed Jun 01 04:00:00 EDT 1983 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(83)90115-3· OSTI ID:5400486

Wang, J S; Martinez, L; Nix, W D

A technique based on pre-creeping and sintering is used to create large, widely spaced cavities at grain boundaries in copper. The size and spacing of the cavities is such that cavity growth is expected to be controlled by the coupling of diffusion and power law creep. The rupture properties of these pre-cavitated samples are studied over a range of stresses and temperatures and the results are compared with the predictions of various theoretical treatments of cavity growth. The stress and temperature dependence of rupture can be described using an analysis of the type suggested by Chen and Argon, provided that the diffusional length is based on the ligament stress rather than the applied stress.

• Research Organization: Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
• DOE Contract Number: AT03-79ER10378
• OSTI ID: 5400486
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 31:6; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
CAVITATION
COPPER
CREEP
CRYSTAL STRUCTURE
DIFFUSION
ELEMENTS
FABRICATION
FAILURES
GRAIN BOUNDARIES
GROWTH
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
RUPTURES
SINTERING
SIZE
SPACE DEPENDENCE
STRESSES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS