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.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
Additional Information: ISSN 0951-3248
ISBNs: 0750309679 (print)
Venue - Dates: Electron Microscopy and Analysis 2003: Institute of Physics Electron Microscopy and Analysis Group Conference, 2003-09-03 - 2003-09-05
Related URLs:
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TA Engineering (General). Civil engineering (General)
Organisations: Engineering Mats & Surface Engineerg Gp
ePrint ID: 37611
Date :
Date Event
2004Published
Date Deposited: 06 Sep 2006
Last Modified: 16 Apr 2017 22:02
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/37611

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