Abstract
Centrifugal casting was used to establish a gradient profile of reinforcement particle densities in a carrier matrix of an Al-Si alloy. Cast hollow cylinders of different volumes and different sizes of SiC particle-reinforced Al-Si/SiC MMCs have been produced. They show a gradient in SiC concentration increasing from a denuded region adjacent to the axis of rotation of the cylinder to a maximum density at the periphery of the cylinder. The CTEs (Coefficient of thermal expansions) decrease in the particle rich sections compared with particle free matrix alloy. An increase of the introduced particle volume results in a decrease of the CTEs. Wear tests show a gradual increase in the mass-based wear rates from the outer section to the denuded region of centrifugally produced MMCs.
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© 2001 Springer Science+Business Media Dordrecht
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Akbulut, H., Durman, M. (2001). Thermal Expansion and Wear Properties of Centrifugally Produced Al-Si/SiC MMCs. In: Baraton, MI., Uvarova, I. (eds) Functional Gradient Materials and Surface Layers Prepared by Fine Particles Technology. NATO Science Series, vol 16. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0702-3_22
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DOI: https://doi.org/10.1007/978-94-010-0702-3_22
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6925-7
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