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Creep behavior of hot extruded Al-5% SiC composite powder

Hosseini Monnazah, A ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.4028/0-87849-419-7.861
  3. Publisher: Trans Tech Publications Ltd , 2007
  4. Abstract:
  5. The creep behavior of particulate Al-5vol.% SiC composite was investigated. The composite powder was produced by mechanical milling and hot extruded at 450°C at the ratio of 16:1. A creep test was carried out at a constant load at 598, 648, and 673 K. Using the existing equations proposed for the steady-state creep of metals, 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 the lower temperatures, i.e. 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
  6. Keywords:
  7. Creep testing ; Metal extrusion ; Metallic matrix composites ; Milling (machining) ; Stress analysis ; Aluminum matrix composites ; Arrhenius relationship ; Steady state creep ; Threshold stress ; Aluminum powder metallurgy
  8. Source: 2006 Powder Metallurgy World Congress and Exhibition, PM 2006, Busan, 24 September 2006 through 28 September 2006 ; Volume 534-536, Issue PART 2 , 2007 , Pages 861-864 ; 02555476 (ISSN); 0878494197 (ISBN); 9780878494194 (ISBN)
  9. URL: https://www.scientific.net/MSF.534-536.861