Factors influencing ductility in the superplastic Zn-22 Pct Al eutectoid
Factors influencing ductility in the superplastic Zn-22 Pct Al eutectoid
The maximum attainable ductility in the superplastic Zn-22 pct Al eutectoid depends critically on the imposed strain rate, the testing temperature, and the initial grain size. High ductilities are observed at intermediate strain rates, and there is a decrease at both higher and lower rates of strain. It is shown that i) the maximum ductility occurs at higher strain rates as the temperature is increased and/or the initial grain size is decreased, and ii) the maximum attainable ductility increases with increasing temperature and/or decreasing initial grain size. For specimens tested at different temperatures, similar macroscopic fracture characteristics are observed in specimens exhibiting a similar maximum flow stress. The experimental trends are qualitatively explained by relating maximum ductility to the maximum strain rate sensitivity and examining the influence of cavitation on the time to rupture.
Mohamed, Farghalli A.
0d8f02a9-fb40-4e5a-9222-3aecf3e4a460
Ahmed, Mohamed M.I.
32cd56f3-0dfe-487a-8f4a-fc5c46ea9c42
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Mohamed, Farghalli A.
0d8f02a9-fb40-4e5a-9222-3aecf3e4a460
Ahmed, Mohamed M.I.
32cd56f3-0dfe-487a-8f4a-fc5c46ea9c42
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Mohamed, Farghalli A., Ahmed, Mohamed M.I. and Langdon, Terence G
(1977)
Factors influencing ductility in the superplastic Zn-22 Pct Al eutectoid.
Metallurgical and Materials Transactions A.
(doi:10.1007/BF02661575).
(In Press)
Abstract
The maximum attainable ductility in the superplastic Zn-22 pct Al eutectoid depends critically on the imposed strain rate, the testing temperature, and the initial grain size. High ductilities are observed at intermediate strain rates, and there is a decrease at both higher and lower rates of strain. It is shown that i) the maximum ductility occurs at higher strain rates as the temperature is increased and/or the initial grain size is decreased, and ii) the maximum attainable ductility increases with increasing temperature and/or decreasing initial grain size. For specimens tested at different temperatures, similar macroscopic fracture characteristics are observed in specimens exhibiting a similar maximum flow stress. The experimental trends are qualitatively explained by relating maximum ductility to the maximum strain rate sensitivity and examining the influence of cavitation on the time to rupture.
Text
BF02661575
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Accepted/In Press date: 1977
Identifiers
Local EPrints ID: 495024
URI: http://eprints.soton.ac.uk/id/eprint/495024
ISSN: 1073-5623
PURE UUID: 646533ae-492b-4f3a-99f5-bed801b9f43d
Catalogue record
Date deposited: 25 Oct 2024 16:58
Last modified: 26 Oct 2024 01:38
Export record
Altmetrics
Contributors
Author:
Farghalli A. Mohamed
Author:
Mohamed M.I. Ahmed
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
