A proposed new structure for GPB2/ S" in Al-Cu-Mg alloys
A proposed new structure for GPB2/ S" in Al-Cu-Mg alloys
Based on previously published HREM work, we propose a new structure for the ordered GPB2/ S" phase with a composition of Al10Cu3Mg3, which is aluminium-rich compared to S phase (Al2CuMg). The proposed structure is coherent with the f.c.c. Al matrix and is formed by the replacement of some Al atoms with Cu/Mg, and has a orthorhombic structure (space group Imm2) and the lattice parameters of a = 0.405 nm, b = 1.62 nm and c = 0.405 nm. The HREM simulation and reflection intensities based on this structure match the experimental image and diffraction patterns.
0750309679
277-280
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
2004
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Wang, S.C. and Starink, M.J.
(2004)
A proposed new structure for GPB2/ S" in Al-Cu-Mg alloys.
McVitie, S. and McComb, D.
(eds.)
In Electron Microscopy and Analysis 2003: Proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, 3-5 September 2003.
CRC Press.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Based on previously published HREM work, we propose a new structure for the ordered GPB2/ S" phase with a composition of Al10Cu3Mg3, which is aluminium-rich compared to S phase (Al2CuMg). The proposed structure is coherent with the f.c.c. Al matrix and is formed by the replacement of some Al atoms with Cu/Mg, and has a orthorhombic structure (space group Imm2) and the lattice parameters of a = 0.405 nm, b = 1.62 nm and c = 0.405 nm. The HREM simulation and reflection intensities based on this structure match the experimental image and diffraction patterns.
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Published date: 2004
Additional Information:
ISSN 0951-3248
Venue - Dates:
Electron Microscopy and Analysis 2003: Institute of Physics Electron Microscopy and Analysis Group Conference, Oxford, UK, 2003-09-03 - 2003-09-05
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 37611
URI: http://eprints.soton.ac.uk/id/eprint/37611
ISBN: 0750309679
PURE UUID: 57e9c274-2097-407c-a7db-eed9a9290a10
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Date deposited: 06 Sep 2006
Last modified: 14 Dec 2023 17:41
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Contributors
Editor:
S. McVitie
Editor:
D. McComb
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