Toughening behavior in whisker-reinforced ceramic matrix composites

Journal Article · Wed Nov 30 23:00:00 EST 1988 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1988.tb05791.x· OSTI ID:5947635

Becher, P F; Hsueh, C H; Angelini, P; Tiegs, T N

The toughening behavior of whisker-reinforced ceramics is analyzed in terms of a whisker bridging zone immediately behind the crack tip. This approach is consistent with microscopy observations which reveal that intact bridging whiskers exist behind the crack tip as a result of debonding of the whisker-matrix interface. The theoretical results based on both the stress intensity and the energy change introduced by bridging whiskers reveal the dependence of toughening upon the composition and matrix, interface, and whisker properties. Furthermore, the analytical models of whisker bridging accompanied by very limited pullout accurately describe experimental observations of the toughening behavior in several SiC-whisker-reinforced ceramics.

• Research Organization: 9501970
• OSTI ID: 5947635
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 71:12; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ANALYTICAL SOLUTION
CARBIDES
CARBON COMPOUNDS
CHEMICAL COMPOSITION
CRYSTALS
DATA
EXPERIMENTAL DATA
INFORMATION
INTERFACES
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
NUMERICAL DATA
REINFORCED MATERIALS
SILICON CARBIDES
SILICON COMPOUNDS
SIZE
TENSILE PROPERTIES
THEORETICAL DATA
WHISKERS