The characteristics of superplastic flow in a magnesium alloy processed by ECAP
The characteristics of superplastic flow in a magnesium alloy processed by ECAP
It is well known that Equal-Channel Angular Pressing (ECAP) introduces an ultrafine grain size and leads to exceptional superplastic properties in a ZK60 (Mg-5.5% Zn-0.5% Zr) alloy. This paper presents an analysis of the flow behavior during superplastic deformation in the ZK60 alloy. It is shown that an increase in the ECAP processing temperature enhances the thermal stability of the grain structure. In addition, the optimum superplastic properties occur at higher strain rates when testing at higher temperatures thereby introducing the potential for achieving high strain-rate superplasticity.
843-846
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2009
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Roberto B. and Langdon, Terence G.
(2009)
The characteristics of superplastic flow in a magnesium alloy processed by ECAP.
International Journal of Materials Research, 6, .
(doi:10.3139/146.110102).
Abstract
It is well known that Equal-Channel Angular Pressing (ECAP) introduces an ultrafine grain size and leads to exceptional superplastic properties in a ZK60 (Mg-5.5% Zn-0.5% Zr) alloy. This paper presents an analysis of the flow behavior during superplastic deformation in the ZK60 alloy. It is shown that an increase in the ECAP processing temperature enhances the thermal stability of the grain structure. In addition, the optimum superplastic properties occur at higher strain rates when testing at higher temperatures thereby introducing the potential for achieving high strain-rate superplasticity.
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Published date: 2009
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 67673
URI: http://eprints.soton.ac.uk/id/eprint/67673
PURE UUID: 834ee8c4-6dcd-40ac-af98-8f74b8c092fc
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Date deposited: 02 Sep 2009
Last modified: 14 Mar 2024 02:47
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Author:
Roberto B. Figueiredo
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