Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-1861 - C7-1866
DOI http://dx.doi.org/10.1051/jp4:19937298
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-1861-C7-1866

DOI: 10.1051/jp4:19937298

Microstructure and fracture behaviour of SiCp/Al-2618 metal matrix composite

Y. ZONG and B. DERBY

Oxford Centre for Advanced Materials and Composites, Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.


Abstract
Spray formed SiC reinforced 2618 Al alloy has potential as an elevated temperature MMC, and its fracture behaviour and mechanical properties have been investigated. SEM observation of matched fracture surfaces and cross-sectional observation of fractured specimens indicate that the composite at T6 temper fractures mainly through SiC particle cracking and that this could begin at very early stages of strain, smaller than 1%. Damage evolution is measured in terms of modulus reduction tests and compared with metallographic observations of particle fracture beneath the fracture surface. Modulus reduction and mechanical property tests have been carried out over a range of temperatures up to 220 °C.



© EDP Sciences 1993