Factors influencing superplastic behavior in a magnesium ZK60 Alloy processed by equal-channel angular pressing
Factors influencing superplastic behavior in a magnesium ZK60 Alloy processed by equal-channel angular pressing
Processing by equal-channel angular pressing was used to refine the grain size of a magnesium ZK60 alloy to ~0.8 ?m and introduce a superplastic capability. Superplastic elongations up to >1000% were achieved at temperatures of 450 and 473 K but the superplastic behavior was lost at 493 K because of grain growth. The strain rate sensitivity under optimum superplastic conditions was measured as ~0.5 which is consistent with conventional superplastic flow.
equal-channel angular pressing, grain stability, magnesium: superplasticity, strain rate sensitivity
141-144
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
15 March 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)
Factors influencing superplastic behavior in a magnesium ZK60 Alloy processed by equal-channel angular pressing.
Materials Science and Engineering: A, 503 (1-2), .
(doi:10.1016/j.msea.2008.04.080).
Abstract
Processing by equal-channel angular pressing was used to refine the grain size of a magnesium ZK60 alloy to ~0.8 ?m and introduce a superplastic capability. Superplastic elongations up to >1000% were achieved at temperatures of 450 and 473 K but the superplastic behavior was lost at 493 K because of grain growth. The strain rate sensitivity under optimum superplastic conditions was measured as ~0.5 which is consistent with conventional superplastic flow.
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Published date: 15 March 2009
Additional Information:
International Symposium on Bulk Nanostructured Materials: from Fundamentals to Innovation, BNM 2007
Keywords:
equal-channel angular pressing, grain stability, magnesium: superplasticity, strain rate sensitivity
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 67627
URI: http://eprints.soton.ac.uk/id/eprint/67627
ISSN: 0921-5093
PURE UUID: a6c2638a-3262-4787-af71-fafccd501f0f
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Date deposited: 28 Aug 2009
Last modified: 14 Mar 2024 02:47
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Author:
Roberto B. Figueiredo
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