B\ue9ch\ue9, Armand

Du, Yong

Li, Kai

Lu, Xingxu

Ringer, Simon P.

Schryvers, Dominique

Sha, Gang

Song, Min

Zhang, Kai

Abstract: The beta '' precipitates in a peak-aged Al-Mg-Si-Cu alloy were measured with an average composition of 28.6Al-38.7Mg-26.5Si-5.17Cu (at.%) using atom probe tomography. High-angle annular dark-field observations revealed that Cu incompletely substitutes for the Mg-1 and Si-3 columns, preferentially for one column in each pair of Si-3. Cu-free Si columns form a parallelogram-shaped network that constitutes the basis of subsequent precipitates in the system, with a = 0.37 nm, b = 0.38 nm, gamma = 113 degrees and c = 0.405 nm. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved

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Atomistic structure of Cu-containing <tex>\beta"$</tex> precipitates in an Al-Mg-Si-Cu alloy

Atomistic structure of Cu-containing <tex>\beta"$</tex> precipitates in an Al-Mg-Si-Cu alloy

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