Title

Creep Behavior of Extruded Al-6Mg-1Sc-1Zr-10 Vol.% SiCp Composite

Abstract

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.

Department(s)

Materials Science and Engineering

Sponsor(s)

National Science Foundation (U.S.)

Keywords and Phrases

Aluminum Matrix Composite; Creep Behavior; Threshold Stress

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Elsevier, All rights reserved.


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