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Image analysis has been used to relate damage development in particulate reinforced metal matrix composites to the local particle volume fraction and particle size during compressive deformation. It is found that there is a strong relationship between damage and the local volume fraction of the reinforcement proving that damage formation is concentrated in regions of particle clustering. There was also observed to be a change in dominance of damage mechanism from particle fracture at low local volume fractions to void formation in the matrix within strongly clustered regions. The results are compared to finite element (FE) modelling of the compressive deformation of clustered particles.
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Prangnell et al. (1996) studied this question.