Creep Behavior of Extruded Al-6Mg-1Sc-1Zr-10 Vol.% SiCp Composite
Creep tests were performed on a fine-grained Al-6Mg-1Sc-1Zr-10 vol.% SiC particulate composite in the temperature range of 423-533 K. The composite exhibited a high value of apparent stress exponent and apparent activation energy for creep at low temperatures. The flow behavior of this composite was characterized by the presence of a threshold stress. Incorporation of threshold stress into analysis reduces the high values of apparent stress exponent and activation energy to those anticipated from the creep of solid solution alloys. The result showed increased creep resistance in the composite compared to the unreinforced alloy.
R. S. Mishra et al., "Creep Behavior of Extruded Al-6Mg-1Sc-1Zr-10 Vol.% SiCp Composite," Materials Science and Engineering: A, Elsevier, Jan 2005.
The definitive version is available at http://dx.doi.org/10.1016/j.msea.2005.08.096
Materials Science and Engineering
National Science Foundation (U.S.)
Keywords and Phrases
Aluminum Matrix Composite; Creep Behavior; Threshold Stress
Article - Journal
© 2005 Elsevier, All rights reserved.