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Microstructure and microtexture evolution with aging treatment in an Al–Mg–Si alloy severely deformed by HPT

  • Nanostructured Materials
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Abstract

Experiments were conducted on an Al–0.6 % Mg–0.4 % Si alloy to evaluate the effect of different preliminary thermal treatments on the evolution of microstructure and microtexture during processing by High-Pressure Torsion (HPT). Disks of the alloy were solution-treated, then some disks were briefly aged at 473 K, and other disks were briefly aged at 523 K before processing by HPT for up to 20 complete revolutions. The processing by HPT refined the microstructure to an average grain size as small as ~0.25 μm in the solution-treated alloy after 20 turns but preliminary aging led to slightly larger average grain sizes of ~0.35–0.40 μm after 20 turns. For all processing conditions, there was a high fraction of high-angle grain boundaries after HPT and it is shown that aging introduces changes in the microtexture intensities.

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Acknowledgements

This work was supported in part by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS.

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Authors and Affiliations

  1. Physics Department, Science Faculty, Aljouf University, P.O. Box 2014, Skaka, Kingdom of Saudi Arabia

    Aicha Loucif

  2. Laboratoire de Physique de Rayonnements (LPR), Département de Physique, Faculté des Sciences, Université Badji Mokhtar, BP 12, 23000, Annaba, Algeria

    Aicha Loucif & Rafik Chemam

  3. Université Paris-Sud, ICMMO, UMR CNRS 8182, bât. 410, 91405, Orsay Cedex, France

    Thierry Baudin, François Brisset & Anne-Laure Helbert

  4. Department of Materials Engineering and Civil Construction, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil

    Roberto B. Figueiredo

  5. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA, 90089-1453, USA

    Terence G. Langdon

  6. Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, SO17 1BJ, UK

    Terence G. Langdon

Authors
  1. Aicha Loucif
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  2. Thierry Baudin
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  4. François Brisset
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  5. Anne-Laure Helbert
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  6. Rafik Chemam
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  7. Terence G. Langdon
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Correspondence to Aicha Loucif.

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Loucif, A., Baudin, T., Figueiredo, R.B. et al. Microstructure and microtexture evolution with aging treatment in an Al–Mg–Si alloy severely deformed by HPT. J Mater Sci 48, 4573–4581 (2013). https://doi.org/10.1007/s10853-012-7065-z

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  • DOI: https://doi.org/10.1007/s10853-012-7065-z

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