Metallographic investigation of reinforcement damage in creep of an AZ 91 matrix composite

Pahutová, M., Březina, J., Kuchařová, K., Sklenička, V. and Langdon, T.G. (1999) Metallographic investigation of reinforcement damage in creep of an AZ 91 matrix composite. Materials Letters, 39 (3), 179-183. (doi:10.1016/S0167-577X(99)00002-6).

Record type: Article

Abstract

Specimens of the AZ 91 composite were creep tested to failure and then examined internally to evaluate the significance of fibre cracking and/or breaking. It is demonstrated that the occurrence of fibre damage is influenced significantly by the nature of the procedures used to prepare samples for subsequent metallographic observations. Using an improved procedure, it is shown that the cracking or breaking of fibres is a relatively unimportant process in the creep failure of the AZ 91 composite.

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Accepted/In Press date: 11 December 1998

Published date: May 1999

Additional Information: Funding Information: financial support for this study was provided by the Grant Agency of the Academy of Sciences of the Czech Republic under Contract A 204 1607, by the Ministry of Education of the Czech Republic under the US–Czech Programme KONTAKT ME 129 and by the National Science Foundation of the United States under Grant No. INT-9602022.