Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1498442 | Scripta Materialia | 2014 | 4 Pages |
Abstract
The β″ 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 Mg1 and Si3 columns, preferentially for one column in each pair of Si3. 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, γ = 113° and c = 0.405 nm.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Kai Li, Armand Béché, Min Song, Gang Sha, Xingxu Lu, Kai Zhang, Yong Du, Simon P. Ringer, Dominique Schryvers,