Microstructure and grain growth behavior of an aluminum alloy metal matrix composite processed by disintegrated melt deposition |
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| Authors: | M Gupta T S Srivatsan |
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| Affiliation: | (1) Department of Mechanical and Production Engineering, National University of Singapore, No. 10, 119-260, Kent Ridge Crescent Singapore;(2) Department of Mechanical Engineering, The University of Akron, 44325-3903 Akron, Ohio |
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| Abstract: | In this study, a silicon-carbide particulate (SiCp), reinforced aluminum alloy-based, metal-matrix composite was synthesized using disintegrated melt deposition. Microstructural
characterization of the disintegrated melt deposition processed composite samples revealed the presence of columnar-equiaxed
shaped grain structure, noninterconnected porosity associated with the reinforcing carbide particulates, improved interfacial
integrity between the reinforcement and the aluminum alloy matrix coupled, and a near uniform distribution of the reinforcing
SiC particulates in the alloy matrix. An examination of grain growth with the objective of delineating the effects of the
silicon carbide particulates revealed a diminishing to minimal role of the reinforcing phase with an increase in temperature
from 450 to 590 °C. |
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| Keywords: | Aluminum alloy composites grain growth metal matrix composite microstructure |
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