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Superplastic Properties of an Aluminum-Based Alloy After Equal-Channel Angular Pressing

Published online by Cambridge University Press:  10 February 2011

Jingtao Wang
Affiliation:
Department of Metallurgy, Xi'an University of Architecture and Technology, Xi'an 710055, P.R. China
Patrick B. Berbon
Affiliation:
Structural Metals Division, Rockwell Science Center, 1049 Camino Dos Rios, Thousand Oaks, CA 91360, U.S.A.
Yuzhong Xu
Affiliation:
Department of Metallurgy, Xi'an University of Architecture and Technology, Xi'an 710055, P.R. China
Lizhong Wang
Affiliation:
Department of Metallurgy, Xi'an University of Architecture and Technology, Xi'an 710055, P.R. China
Terence G. Langdon
Affiliation:
Departments of Materials Science and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, U.S.A. langdon@usc.edu
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Abstract

It is now recognized that superplasticity requires a very small grain size, typically > 10 μm. A further reduction in grain size, to the submicrometer or nanometer level, offers the potential for attaining superplasticity at both faster strain rates and lower temperatures. This paper reports an investigation of the microstructure and tensile behavior of an Al-3% Mg-0.5% Zr alloy after processing by equal-channel angular pressing to an equivalent true strain of ∼8.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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