HRTEM Study of Precipitates in Al-Mg-Si and Al-Mg-Ge Alloys

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In this work, the crystal structure of the rod-shaped precipitate in aged Al -1.0 mass% Mg2Ge alloy at 523 K has been investigated by high resolution transmission electron microscopy (HRTEM), electron diffraction technique and energy dispersive X-ray spectroscopy (EDS). The rod-shaped precipitate in its alloy has showed the similar arrangement of bright dots in its HRTEM images and selected area diffraction pattern (SADP) to those of the b’-phase in Al-Mg2Si alloy. But a lattice constant of this precipitate in Al-Mg2Ge alloy was slightly larger than the b’-phase in Al-Mg2Si alloy. In addition, the new metastable phase has been found out in Al-Mg-Ge alloy.

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Edited by:

W.J. Poole, M.A. Wells and D.J. Lloyd

Pages:

221-226

DOI:

10.4028/www.scientific.net/MSF.519-521.221

Citation:

K. Matsuda et al., "HRTEM Study of Precipitates in Al-Mg-Si and Al-Mg-Ge Alloys", Materials Science Forum, Vols. 519-521, pp. 221-226, 2006

Online since:

July 2006

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$35.00

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