Metal matrix composite solidification in the presence of cooled fibers: numerical simulation and experimental observation |
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Authors: | Eng-Kwong Lee Ryoichi S Amano Pradeep K Rohatgi |
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Institution: | (1) Department of Mechanical Engineering, University of Wisconsin—Milwaukee, P.O. Box 784, Milwaukee, WI 53201, USA;(2) Department of Materials Engineering, University of Wisconsin—Milwaukee, P.O. Box 784, Milwaukee, WI 53201, USA |
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Abstract: | Attempts have been made to alter the solidification microstructures of fiber reinforced aluminum composites by cooling the
ends of the fibers extending out of the mold. Experimental observations indicate that cooling the extended ends of the reinforcement
results in finer microstructures in the matrix and changes the nature of the interface. In this paper, numerical simulation
is performed on a two-dimensional axi-symmetric model to investigate the solidification process of metal matrix composite
(MMC) with the extended ends of the fibers cooled by a heat sink. The numerical simulation is based on the source-based enthalpy
method with finite volume discretization. The temperature profiles obtained by simulation are compared to the cooling curves
measured experimentally in order to validate the current mathematical model. It is found that the simulation result matches
the experimental data with reasonable agreement. |
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Keywords: | Numerical simulation Solidification Metal matrix composite Source-based method Finite volume method |
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