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

한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지

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)
  • 발행 : 2006.09.24
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

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 $29\;kJ\;mole^{-1}$.

키워드