An investigation of cavity growth in a superplastic aluminum alloy processed by ECAP
An investigation of cavity growth in a superplastic aluminum alloy processed by ECAP
Quantitative measurements were taken to evaluate the significance of cavitation in the tensile testing of a superplastic spray-cast Al-7034 alloy processed by equal-channel angular pressing (ECAP). Samples were processed by ECAP and then tested in tension at 673 K using strain rates from 10?3 to 10?1 s?1. For comparison purposes, similar tensile testing was conducted also on samples without ECAP processing. Inspection of polished sections after tensile testing revealed extensive internal cavitation in all samples. Measurements were taken to provide detailed information on the sizes and shapes of the cavities and these measurements were analyzed to determine the dominant cavity growth mechanisms. The results demonstrate the importance of superplastic diffusion growth in ultrafine-grained materials processed by ECAP.
cavitation, cavity growth mechanisms, equal-channel angular pressing, superplasticity, ultrafine grains
5353-5364
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2005
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Kawasaki, Megumi, Xu, Cheng and Langdon, Terence G.
(2005)
An investigation of cavity growth in a superplastic aluminum alloy processed by ECAP.
Acta Materialia, 53 (20), .
(doi:10.1016/j.actamat.2005.08.012).
Abstract
Quantitative measurements were taken to evaluate the significance of cavitation in the tensile testing of a superplastic spray-cast Al-7034 alloy processed by equal-channel angular pressing (ECAP). Samples were processed by ECAP and then tested in tension at 673 K using strain rates from 10?3 to 10?1 s?1. For comparison purposes, similar tensile testing was conducted also on samples without ECAP processing. Inspection of polished sections after tensile testing revealed extensive internal cavitation in all samples. Measurements were taken to provide detailed information on the sizes and shapes of the cavities and these measurements were analyzed to determine the dominant cavity growth mechanisms. The results demonstrate the importance of superplastic diffusion growth in ultrafine-grained materials processed by ECAP.
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Published date: 2005
Keywords:
cavitation, cavity growth mechanisms, equal-channel angular pressing, superplasticity, ultrafine grains
Organisations:
Engineering Sciences
Identifiers
Local EPrints ID: 23826
URI: http://eprints.soton.ac.uk/id/eprint/23826
ISSN: 1359-6454
PURE UUID: cb22dc9c-f7c8-4569-bc52-22dbb72dba40
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Date deposited: 17 Mar 2006
Last modified: 16 Mar 2024 03:28
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Author:
Megumi Kawasaki
Author:
Cheng Xu
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