Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Thermomechanical Properties of Functionally Graded $Al-SiC_p$ Composites

  • Song, Dae-Hyun (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Yong-Ha (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Yong-Ho (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Ik-Min (School of Materials Science and Engineering, Pusan National University) ;
  • Cho, Kyung-Mox (School of Materials Science and Engineering, Pusan National University)
  • Published : 2006.09.24
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Abstract

A theoretical model is applied to the analysis of thermomechanical properties of $Al-SiC_p$ FGMs in this study. Functionally graded $Al-SiC_p$ composites ($Al-SiC_p$ FGMs) consisted with 10 layers gradually changing volume fractions of Al and $SiC_p$ were fabricated using the pressureless infiltration technique. $Al-SiC_p$ FGMs plates of total thickness of 3mm, 5mm and 7mm with fairly uniform distribution and compositional gradient of $SiC_p$ reinforcement in the Al matrix throughout the thickness was successfully fabricated. The curvature of $Al-SiC_p$ FGM plates was measured to check the internal stress distribution predicted via a theoretical model for the analysis of thermo-mechanical deformation. The evolution of curvature and also internal stresses in response to temperature variations could be predicted for the different combinations of geometric thickness of FGM plates. Theoretical prediction of thermally induced stress distribution makes it possible to design FGM structures without any critical failure during the usage of them.

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