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Thermal Properties and Fracture Behavior of Compositionally Graded Al-SiCp Composites

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Abstract:

Compositionally graded Al-SiCp composites were fabricated using pressureless infiltration process. Microstructure was examined and thermal properties were characterized for Al-SiCp composites. Al-SiCp composites with fairly uniform distribution and compositional gradient of SiC reinforcement in the Al matrix though the thickness direction was successfully fabricated. The thermal conductivity of Al-SiCp composites was measured at room temperature, 200°C and 400°C using laser flash method. Thermal conductivity of Al-SiCp composites increases non-linearly with decreasing the volume fraction of SiC. Cyclic thermal shock fatigue tests were performed by immersing Al-SiCp functionally graded materials(FGM) into water from the various heating temperatures of 400°C , 300°C and 200°C , repeatedly. After cyclic thermal shock fatigue tests, micro-hardness was measured and formation of cracks was investigated.e fati

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Periodical:

Materials Science Forum (Volumes 449-452)

Pages:

621-624

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.449-452.621

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Online since:

March 2004

Authors:

Kyung Mok Cho, Il Dong Choi, Ik Min Park

Keywords:

Al-SiCp, Functionally Graded Material (FGM), Microstructure, Pressureless Infiltration, Thermal Property

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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