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Characterisation of the precipitation in Al-Li-Cu-Mg-(Mn, Zr) alloys

Characterisation of the precipitation in Al-Li-Cu-Mg-(Mn, Zr) alloys
Characterisation of the precipitation in Al-Li-Cu-Mg-(Mn, Zr) alloys
The three-dimensional atom probe has been used to characterize the precipitates in two Li-containing 2xxx series aluminium alloys: Al-6Li-Cu-Mg-0.2Mn (alloy A) and Al-6Li-Cu-Mg-0.03Zr (alloy B). The alloys have been heat treated at 150?C for times in the range 6-24 h. In alloy A, the particles identified can be classified into two categories: those rich in Cu and Mg (similar to GPB zones and S' precipitates); and spherical particles rich in Li (?' precipitates). Clusters rich in Li are also observed. The same phases are observable in alloy B, although growth of the ?' phase precipitates is accompanied by the formation of a Zr-rich phase similar to ?'.
three-dimensional atom probe, Al-Li-Cu-Mg-Zr • ?' • ?' • S' • GPB zones
0142-2421
589-593
Davin, Laury
25cace08-feb2-41dd-8322-c8a36eecfdb1
Cerezo, Alfred
8689ab12-55f7-45e6-bb9e-10a7a1efcaf7
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Starink, Marco
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Davin, Laury
25cace08-feb2-41dd-8322-c8a36eecfdb1
Cerezo, Alfred
8689ab12-55f7-45e6-bb9e-10a7a1efcaf7
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Starink, Marco
fe61a323-4e0c-49c7-91f0-4450e1ec1e51

Davin, Laury, Cerezo, Alfred, Gao, Nong and Starink, Marco (2004) Characterisation of the precipitation in Al-Li-Cu-Mg-(Mn, Zr) alloys. Surface and Interface Analysis, 36 (5-6), 589-593. (doi:10.1002/sia.1707).

Record type: Article

Abstract

The three-dimensional atom probe has been used to characterize the precipitates in two Li-containing 2xxx series aluminium alloys: Al-6Li-Cu-Mg-0.2Mn (alloy A) and Al-6Li-Cu-Mg-0.03Zr (alloy B). The alloys have been heat treated at 150?C for times in the range 6-24 h. In alloy A, the particles identified can be classified into two categories: those rich in Cu and Mg (similar to GPB zones and S' precipitates); and spherical particles rich in Li (?' precipitates). Clusters rich in Li are also observed. The same phases are observable in alloy B, although growth of the ?' phase precipitates is accompanied by the formation of a Zr-rich phase similar to ?'.

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More information

Published date: 2004
Keywords: three-dimensional atom probe, Al-Li-Cu-Mg-Zr • ?' • ?' • S' • GPB zones
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 22128
URI: https://eprints.soton.ac.uk/id/eprint/22128
ISSN: 0142-2421
PURE UUID: 457cea1f-ded1-4a13-92f5-8bf2bfcaafeb

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Date deposited: 02 Jun 2006
Last modified: 17 Jul 2017 16:23

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