Precipitation in stretched Al-Cu-Mg alloys with reduced alloying content studied by DSC, TEM and atom probe
Precipitation in stretched Al-Cu-Mg alloys with reduced alloying content studied by DSC, TEM and atom probe
The hardening and microstructural evolution during ageing of a Al-1.2Cu-0.5Mg and a Al-1.2Cu-1.2Mg (at.%) alloy has been investigated. Artificial ageing at 150°C of stretched and naturally aged samples initially (up to about 48 h) leads to very limited further strengthening, but ageing at 190°C results a quick increase in strength. Detailed microstructural investigation using differential scanning calorimetry, transmission electron microscopy and three-dimensional atom probe demonstrated that hardening at 150ºC is mostly dominated by the formation of solute clusters with varying compositions and plate-like zones rich in copper at early stages of ageing (t<24h) and by the formation of S phase at the later stages of ageing. At higher 190ºC no zones or clusters form and the ageing is dominated by the formation of S precipitates.
dcs, atom probe, precipitation, Al-Cu-Mg alloys, gpb zone
0878498990
923-928
Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Davin, L.
9eda8125-60c9-4be9-ad97-af73b829cecb
Wang, S.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Cerezo, A.
2071e813-6bf2-4d2e-838d-33d0220f279f
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
2002
Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Davin, L.
9eda8125-60c9-4be9-ad97-af73b829cecb
Wang, S.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Cerezo, A.
2071e813-6bf2-4d2e-838d-33d0220f279f
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Gao, N., Davin, L., Wang, S., Cerezo, A. and Starink, M.J.
(2002)
Precipitation in stretched Al-Cu-Mg alloys with reduced alloying content studied by DSC, TEM and atom probe.
In Aluminium Alloys 2002: Their Physical and Mechanical Properties.
Trans Tech Publications.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The hardening and microstructural evolution during ageing of a Al-1.2Cu-0.5Mg and a Al-1.2Cu-1.2Mg (at.%) alloy has been investigated. Artificial ageing at 150°C of stretched and naturally aged samples initially (up to about 48 h) leads to very limited further strengthening, but ageing at 190°C results a quick increase in strength. Detailed microstructural investigation using differential scanning calorimetry, transmission electron microscopy and three-dimensional atom probe demonstrated that hardening at 150ºC is mostly dominated by the formation of solute clusters with varying compositions and plate-like zones rich in copper at early stages of ageing (t<24h) and by the formation of S phase at the later stages of ageing. At higher 190ºC no zones or clusters form and the ageing is dominated by the formation of S precipitates.
Text
Precipitation_ins_stretched_Al-Cu-Mg_(2).pdf
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More information
Published date: 2002
Additional Information:
Series ISSN 0255-5476
Venue - Dates:
8th International Conference ICAA8, Cambridge, UK, 2002-07-02 - 2002-07-05
Keywords:
dcs, atom probe, precipitation, Al-Cu-Mg alloys, gpb zone
Identifiers
Local EPrints ID: 18830
URI: http://eprints.soton.ac.uk/id/eprint/18830
ISBN: 0878498990
PURE UUID: 076094df-9921-43a4-903e-8e096cb3857e
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Date deposited: 12 Dec 2005
Last modified: 16 Mar 2024 03:21
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Contributors
Author:
L. Davin
Author:
A. Cerezo
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