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Internal Stress in an Alumina/Silicon Carbide Whisker Composite

Published online by Cambridge University Press:  06 March 2019

M. Oden ,
T. Ericsson  and
J. B. Cohen
M. Oden
Affiliation:
Engineering Materials Linköping University S-581 83 Linköping, Sweden
T. Ericsson
Affiliation:
Engineering Materials Linköping University S-581 83 Linköping, Sweden
J. B. Cohen
Affiliation:
Department of Materials Science and Engineering McCormick School of Engineering and Appiied Science Northwestern University Evanston IL, 60208-3100, USA
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Abstract

The internal stress state in a Al2O3-SiC composite has been studied with X-ray diffraction and with calculations with a modified Eshelby model. The influence (on the internal stress state) of volume fraction, temperature, geometric shape, and the orientation of the silicon carbide particles are discussed. The stress tensors were measured in both the matrix and in the reinforcing phase, and the macro- and microstresses were separated for ail the components. Good agreement with the microstresses for the Eshelby model is found in all cases.

Results from X-ray diffraction experiments at low temperature (45-295 K) on the coefficient of thermal expansion are also presented.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 39: Forty-Fourth Annual Conference on Applications of X-ray Analysis, July 31 - August 4, 1995 , 1995 , pp. 391 - 403
Copyright
Copyright © International Centre for Diffraction Data 1995

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