Journal
SCRIPTA MATERIALIA
Volume 64, Issue 9, Pages 817-820Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.01.008
Keywords
Atom probe tomography; Transmission electron microscopy; Aluminum alloys; Precipitation; Phase transformations
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Funding
- Research Council of Norway
- Norwegian industry: Hydro, Steertec Raufoss AS
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Intergrown Q' and L precipitates formed in an overaged Al-Mg-Si-Cu alloy were studied by transmission electron microscopy and atom probe tomography. The composition of the ordered Q' phase was measured to be Al3.8Mg8.6Si7.0Cu1.0, while less Mg was found in the disordered L phase. Compared to the equilibrium Q phase, Q' contained less Cu and more Al. Similar Si concentrations were found in the Q' and L precipitates, consistent with the presence of a common Si arrangement in both structures. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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