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A proposed new structure for GPB2/ S" in Al-Cu-Mg alloys

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. Chemical Rubber Company Press., pp. 277-280.

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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More information

Published date: 2004
Additional Information: ISSN 0951-3248
Venue - Dates: Electron Microscopy and Analysis 2003: Institute of Physics Electron Microscopy and Analysis Group Conference, 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

Catalogue record

Date deposited: 06 Sep 2006
Last modified: 17 Jul 2017 15:41

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Contributors

Author: S.C. Wang
Author: M.J. Starink
Editor: S. McVitie
Editor: D. McComb

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