Transient effects in creep cavity nucleation and early growth in ceramics

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6336953

Page, R A; Chan, K S

Creep fracture of ceramic materials frequently occurs by the nucleation, growth, and coalescence of grain boundary cavities. Results of recent experimental studies of cavitation kinetics in compression crept ceramics are presented to illustrate the transient nature of cavity nucleation and early growth. The transient character of cavitation arises primarily due to the dependence of both cavity nucleation and early cavity growth on the stochastic process of grain boundary sliding. Possible mechanisms for the observed transient behavior will be presented and implications discussed. 45 refs., 4 figs.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA)
• DOE Contract Number: FG05-84ER45063
• OSTI ID: 6336953
• Report Number(s): CONF-890310-5; ON: DE89010420
• Resource Relation: Conference: 7. international conference on fracture, Houston, TX, USA, 20 Mar 1989; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CAVITIES
NUCLEATION
CERAMICS
CREEP
CAVITATION
COMPRESSION
FRACTURES
GRAIN BOUNDARIES
STRESS ANALYSIS
CRYSTAL STRUCTURE
FAILURES
MECHANICAL PROPERTIES
MICROSTRUCTURE
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies