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Thermally-activated flow in nominally binary Al–Mg alloys

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Leyson,  Gerard Paul M.
Adaptive Structural Materials (Simulation), Computational Materials Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Leyson, G. P. M., & Curtin, W. A. (2016). Thermally-activated flow in nominally binary Al–Mg alloys. Scripta Materialia, 111, 85-88. doi:10.1016/j.scriptamat.2015.08.020.


Cite as: http://hdl.handle.net/21.11116/0000-0001-BA33-4
Abstract
The temperature-dependent flow behavior in nominally binary Al-Mg alloys measured recently (Jobba et al., 2015; Niewczas et al., 2015) is interpreted in the context of a parameter-free solute strengthening model. The recent measurements show consistently higher strengths as compared to literature data on true binary Al-Mg alloys, which is attributed to the presence of Fe in the nominally binary Al-Mg. Using the Fe concentration as a single fitting parameter, the model predictions for the newer materials when treated as Al-Mg-(Fe) alloys agree with experiments to the same degree as obtained for the true binary Al-Mg. The model then predicts the activation volume in good agreement with experimental trends. © 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.