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Severe plastic deformation of an as-cast hypoeutectic Al–Si alloy

  • Ultrafine-Grained Materials
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Abstract

Different equal channel angular pressing (ECAP) processing routes have been employed to investigate the flow plane microstructures in a hypoeutectic Al–7wt%Si. In the as-cast condition, this alloy exhibits equiaxed primary aluminum dendrite cells embedded in an Al–Si eutectic constituent. The observed microstructures have been compared to the predicted distortion of a volume element expected during idealized ECAP. The effect of different processing routes on the microstructure refinement, degree of homogenization of second phase particles, and associated mechanical properties are discussed.

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Notes

  1. γN is different from the cumulative idealized shear strain, γT, experienced after N passes where γT = 2Ncot(φ).

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Acknowledgements

The authors acknowledge financial support from CICYT under program MAT2003/01172. J. García-Infanta would like to express his thanks to the Spanish Ministry of Education and Science for providing an FPI fellowship number BES-2004-4865, and travel expenses. T. R. McNelley and S. Swaminathan acknowledge partial support for this work by the U.S. Air Force Office of Scientific Research under funding document no. F1ATA06058G001. S. Swaminathan acknowledges a U.S. National Research Council Fellowship.

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Authors and Affiliations

  1. Department of Mechanical & Astronautical Engineering, Naval Postgraduate School, 700 Dyer Road, Monterey, CA, 93943-5146, USA

    S. Swaminathan & T. R. McNelley

  2. Department of Physical Metallurgy, Centro Nacional de Investigaciones Metalúrgicas (CENIM), CSIC, Av. de Gregorio del Amo 8, 28040, Madrid, Spain

    J. M. García-Infanta, O. A. Ruano & F. Carreño

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  1. S. Swaminathan
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  2. J. M. García-Infanta
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  3. T. R. McNelley
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  4. O. A. Ruano
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  5. F. Carreño
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Correspondence to T. R. McNelley.

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Swaminathan, S., García-Infanta, J.M., McNelley, T.R. et al. Severe plastic deformation of an as-cast hypoeutectic Al–Si alloy. J Mater Sci 43, 7501–7506 (2008). https://doi.org/10.1007/s10853-008-2625-y

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  • DOI: https://doi.org/10.1007/s10853-008-2625-y

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