Microstructural Observations in a Cast Al-Si-Cu/TiC Composite |
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Authors: | A E Karantzalis A Lekatou E Georgatis V Poulas H Mavros |
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Affiliation: | (1) Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Hellas, Greece |
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Abstract: | A 3-5 vol.% TiC particulate Al-Si-Cu composite was prepared by diluting Al/20 vol.% TiC composite in an Al-7Si-4Cu alloy matrix.
TiC particle distribution consists of isolated and clustered particles which are both located at the primary-α grain boundaries
and at the areas of the last solidified liquid. Particle pushing by the solidification front is responsible for the final
particle location. The solidified microstructure consists of primary and intermetallic phases formed by a sequence of possible
eutectic reactions. No evidence of TiC particle degradation was observed. |
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