Creep Behavior of Hot Extruded Al-5% SiC Composite Powder

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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.

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim

Pages:

861-864

DOI:

10.4028/www.scientific.net/MSF.534-536.861

Citation:

A. Hosseini Monnazah et al., "Creep Behavior of Hot Extruded Al-5% SiC Composite Powder", Materials Science Forum, Vols. 534-536, pp. 861-864, 2007

Online since:

January 2007

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Price:

$38.00

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