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) C7-1857 - C7-1860
DOI http://dx.doi.org/10.1051/jp4:19937297
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) C7-1857-C7-1860

DOI: 10.1051/jp4:19937297

X-ray microtomography of damage in particle-reinforced metal matrix composites

P.M. MUMMERY1, B. DERBY1, P. ANDERSON2, G. DAVIS2 and J.C. ELLIOTT2

1  Oxford Centre for Advanced Materials and Composites, Department of Materials, University of Oxford, Parks road, Oxford OX2 9BL, England
2  Department of Child Dental Health, London Hospital Medical College, Turner street, London, E1 2AD, England


Abstract
The damage which occurs on plastic straining of silicon carbide particle-reinforced aluminium alloys has been characterised using x-ray rnicrotomography. The technique is used to provide density measurements as a function of strain in addition to imaging the interna1 structure with a resolution of ≈15µm. This allows a much more accurate determination of microstructural damage in terms of void growth than is available from measurements of density using buoyancy methods or from elastic modulus decrease. These data can be combined with acoustic emission measurements during straining to allow damage nucleation and growth contributions to be separated.



© EDP Sciences 1993