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Structural Evolution and Deformation in an Aluminum-Based Solid Solution Alloy with Submicron Grain Size

Published online by Cambridge University Press:  21 February 2011

Jingtao Wang ,
Zenji Horita ,
Minoru Nemoto ,
Minoru Furukawa ,
Ruslan Z. Valiev ,
Yan Ma  and
Terence G. Langdon
Jingtao Wang
Affiliation:
Kyushu University, Department of Materials Science and Engineering, Fukuoka 812, Japan
Zenji Horita
Affiliation:
Kyushu University, Department of Materials Science and Engineering, Fukuoka 812, Japan
Minoru Nemoto
Affiliation:
Kyushu University, Department of Materials Science and Engineering, Fukuoka 812, Japan
Minoru Furukawa
Affiliation:
Fukuoka University of Education, Department of Technology, Munakata, Fukuoka 811-41, Japan
Ruslan Z. Valiev
Affiliation:
Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa 450001, Russia
Yan Ma
Affiliation:
University of Southern California, Departments of Materials Science and Mechanical Engineering, Los Angeles, CA 90089-1453, U.S.A.
Terence G. Langdon
Affiliation:
University of Southern California, Departments of Materials Science and Mechanical Engineering, Los Angeles, CA 90089-1453, U.S.A.
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Abstract

Superplastic ductilities may be achieved in tension using polycrystalline materials with small grain sizes (typically <10 μm). Experiments were conducted to evaluate the significance of the grain boundaries in an Al-3% Mg solid solution alloy with a submicron grain size (∼0.2 μm). The material was produced by subjecting the alloy to severe plastic strain using a pressing technique. This paper describes the nature of the microstructure in the as-fabricated condition, the evolution of the microstructure as a function of time and/or temperature, and the effect of testing in tension at a temperature of 403 K.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 319: Symposia CB – Defect-Interface Interactions , 1993 , 293
Copyright
Copyright © Materials Research Society 1994

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