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On Prevalent Whisker Toughening Mechanisms in Ceramics

Published online by Cambridge University Press:  25 February 2011

A. G. Evans ,
M. Rühle ,
B. J. Daigleish  and
M. D. Thouless
A. G. Evans
Affiliation:
Materials Program, College of Engineering University of California Santa Barbara, California 93106
M. Rühle
Affiliation:
Materials Program, College of Engineering University of California Santa Barbara, California 93106
B. J. Daigleish
Affiliation:
Materials Program, College of Engineering University of California Santa Barbara, California 93106
M. D. Thouless
Affiliation:
Materials Program, College of Engineering University of California Santa Barbara, California 93106
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Abstract

Some aspects of whisker toughening are reviewed. It is shown that several important toughened materials have a toughness dominated by the nonlinear bridging of intact whiskers. Such toughening is demonstrated to depend sensitively on the relative fracture resistance properties of the whiskers, the interface and the matrix. It is also shown that, when the interface fracture resistance is low, the frictional sliding behavior of the previously debonded interface and the whisker strength distribution exert a major influence on toughness, in accordance with pull-out phenomena.

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 78: Symposium E – Advances in Structural Ceramics , 1986 , 259
Copyright
Copyright © Materials Research Society 1987

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References

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