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In situ scanning electron microscope studies of fracture in particulate-reinforced metal-matrix composites

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Abstract

In situ observations of specimen surfaces have been used to characterize the fracture behaviour of particulate-reinforced metal-matrix composites. Composites of silicon carbide particle sizes 3, 10 and 30 μm with volume fractions of 5, 10 and 20% in commercial-purity aluminium and aluminium-1% magnesium matrices were studied. The results of this surface study are compared with complementary metallographic studies of sectioned specimens illustrating behaviour from the bulk. Significant differences between the results of these two studies are outlined. Previous work using these techniques is critically examined and recommendations made for the appropriate interpretation of in situ straining experiments.

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Authors and Affiliations

  1. School of Materials, University of Leeds, LS2 9JT, Leeds

    P. M. Mummery

  2. Department of Materials, University of Oxford, Parks Road, OX1 3PH, Oxford, UK

    B. Derby

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  1. P. M. Mummery
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  2. B. Derby
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Mummery, P.M., Derby, B. In situ scanning electron microscope studies of fracture in particulate-reinforced metal-matrix composites. JOURNAL OF MATERIALS SCIENCE 29, 5615–5624 (1994). https://doi.org/10.1007/BF00349956

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