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

P. M. MUMMERY, B. DERBY, P. ANDERSON, G. DAVIS, J. C. ELLIOTT
1993 Journal de Physique IV : Proceedings  
The damage which occurs on plastic straining of silicon carbide particle-reinforced aluminium alloys has been characterised using x-ray microtomography. The technique is used to provide density measurements as a function of strain in addition to imaging the internal structure with a resolution of -15pm. 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
more » ... ease. These data can be combined with acoustic emission measurements during straining to allow damage nucleation and growth contributions to be separated.
doi:10.1051/jp4:19937297 fatcat:h6n3lnknobbpte4ublrxzghsuu