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Structural and hardness inhomogeneities in Mg–Al–Zn alloys processed by high-pressure torsion

  • Nanostructured Materials
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Abstract

Experiments were conducted to evaluate the evolution of structure and hardness in processing by high-pressure torsion (HPT) of the magnesium AZ91 and AZ31 alloys. Both alloys were processed by HPT at room temperature for 1/4, 1, and 5 turns using a rotation speed of 1 rpm. Structure observations and microhardness measurements were undertaken on vertical cross-sectional planes cut through the HPT disks. The results demonstrate that the deformation is heterogeneous across the vertical cross sections but with a gradual evolution toward homogeneity with increasing numbers of revolutions.

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Acknowledgements

One of the authors is grateful for support from The Higher Committee for Education Development (HCED) of the Government of Iraq (AA-Z). This work was supported by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS.

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Authors and Affiliations

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

    Ahmed Al-Zubaydi, Yi Huang & Terence G. Langdon

  2. Department of Materials Engineering and Civil Construction, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil

    Roberto B. Figueiredo

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

    Terence G. Langdon

Authors
  1. Ahmed Al-Zubaydi
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  2. Roberto B. Figueiredo
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  3. Yi Huang
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  4. Terence G. Langdon
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Correspondence to Ahmed Al-Zubaydi.

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Al-Zubaydi, A., Figueiredo, R.B., Huang, Y. et al. Structural and hardness inhomogeneities in Mg–Al–Zn alloys processed by high-pressure torsion. J Mater Sci 48, 4661–4670 (2013). https://doi.org/10.1007/s10853-013-7176-1

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  • DOI: https://doi.org/10.1007/s10853-013-7176-1

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