Characteristics of cavitation in a superplastic magnesium AZ31 alloy processed by equal-channel angular pressing
Characteristics of cavitation in a superplastic magnesium AZ31 alloy processed by equal-channel angular pressing
Experiments were conducted on a magnesium AZ31 alloy to evaluate the role of cavitation in high temperature superplasticity. Samples were processed by equal-channel angular pressing (ECAP) and then pulled to failure in tension at a temperature of 623K. Similar tests were also conducted on the as-received alloy. The results show the development of significant internal cavitation in this alloy when testing both the as-received samples and the samples processed by ECAP at strain rates up to 10-3 s-1.
An analysis of the cavity morphologies shows the cavities grow initially by a diffusion process in which vacancies are absorbed from the surrounding grain boundaries but there is a transition to plasticity-controlled growth for the larger cavities.
249-255
Figueiredo, R.B.
1b4f5fa6-b201-4435-8f5e-13833fc8d504
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2010
Figueiredo, R.B.
1b4f5fa6-b201-4435-8f5e-13833fc8d504
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, R.B. and Langdon, T.G.
(2010)
Characteristics of cavitation in a superplastic magnesium AZ31 alloy processed by equal-channel angular pressing.
Reviews on Advanced Materials Science, 25, .
Abstract
Experiments were conducted on a magnesium AZ31 alloy to evaluate the role of cavitation in high temperature superplasticity. Samples were processed by equal-channel angular pressing (ECAP) and then pulled to failure in tension at a temperature of 623K. Similar tests were also conducted on the as-received alloy. The results show the development of significant internal cavitation in this alloy when testing both the as-received samples and the samples processed by ECAP at strain rates up to 10-3 s-1.
An analysis of the cavity morphologies shows the cavities grow initially by a diffusion process in which vacancies are absorbed from the surrounding grain boundaries but there is a transition to plasticity-controlled growth for the larger cavities.
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Published date: 2010
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 170763
URI: http://eprints.soton.ac.uk/id/eprint/170763
ISSN: 1605-8127
PURE UUID: 1b2c8488-302f-4f02-84d9-6c6d59d1fa7c
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Date deposited: 10 Jan 2011 15:13
Last modified: 09 Jan 2022 03:10
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Author:
R.B. Figueiredo
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