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Temperature Effects in Al 5083 with a Bimodal Grain Size

Published online by Cambridge University Press:  29 April 2013

Andrew C. Magee  and
Leila J. Ladani
Andrew C. Magee
Affiliation:
The University of Alabama, Mechanical Engineering, Tuscaloosa, AL 35487, U.S.A.
Leila J. Ladani
Affiliation:
The University of Alabama, Mechanical Engineering, Tuscaloosa, AL 35487, U.S.A.
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Abstract

An Al 5083 alloy with a bimodal grain size has been previously synthesized using a low-temperature milling process and consolidation via cold isostatic pressing (CIP). This material has been shown to exhibit greatly improved strength when compared to conventional aluminum alloys. Additionally, this material has shown sensitivity to test conditions. In this work, we studied the effects of temperature on the strain rate sensitivity of this material by examining its elastic and plastic properties though uniaxial tension tests conducted under a variety of conditions at temperatures up to 473 K. Serrated stress-strain curves were observed, indicating dynamic strain aging. Strain rate sensitivity was found to depend non-monotonically on the test temperature.

Keywords

Alnanostructurestress/strain relationship
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1513: Symposium GG – Mechanical Behavior of Metallic Nanostructured Materials , 2013 , mrsf12-1513-gg06-12
Copyright
Copyright © Materials Research Society 2013

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References

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