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

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Creep Behavior of Hot Extruded Al-5% SiC Composite Powder

  • Monnazah, A. Hosseini (Department of Materials Science and Engineering, Sharif University of Technology) ;
  • Simchi, A. (Department of Materials Science and Engineering, Sharif University of Technology) ;
  • Reihani, S.M. Seyed (Department of Materials Science and Engineering, Sharif University of Technology)
  • Published : 2006.09.24
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Abstract

The creep behavior of Al-5vol.% SiC composite was investigated. The composite powder was produced by mechanical milling and hot extruded at $450^{\circ}C$ at ratio of 16:1. A creep test was carried out at a constant load at 598, 648, and 673 K. Using the steady-state equations, the threshold stress and the stress exponent of the creep as a function of temperature were determined. The stress exponent was found to be 3 at the temperature of 673 K and 8 at 598 and 648 K. The dependency of the threshold stress to temperature obeys the Arrhenius relationship with the energy term of $29\;kJ\;mole^{-1}$.

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