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Ultrafine pure aluminium through back pressure equal channel angular consolidation (BP-ECAC) of particles

  • Nano May 2006
  • Published:
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Abstract

Pure Al particles were synthesised into bulk materials using back pressure equal channel angular consolidation (BP-ECAC) and further deformed up to 4 passes of ECAP at 100 °C with the application of 50 MPa in back pressure. Ingot metallurgy (IM) Al was processed under the same conditions to provide comparison. The microstructures were characterised using TEM for grain size and shape as well as misorientations. In general, the grains were finer and misorientations larger in the PM (powder metallurgy) materials than in the IM materials. The tensile strength of the PM materials was significantly higher than that of the IM materials. Different work hardening behaviours were observed between the materials after 1 pass and those after 4 passes.

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Acknowledgements

This project was supported by the Australian Research Council with the ARC Centre of Excellence for Design in Light Metals and by the University of Melbourne under the Melbourne Research Grants Scheme. The supply of Al particles by ECKA Granules Australia and assistance from Comalco Research and Technical Support are gratefully acknowledged. We also acknowledge assistance received from the NANO-MNRF.

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Authors and Affiliations

  1. Department of Mechanical and Manufacturing Engineering and ARC Centre of Excellence for Design in Light Metals, University of Melbourne, Parkville, VIC, 3010, Australia

    K. Xia & X. Wu

  2. Australian Key Centre for Microscopy & Microanalysis, University of Sydney, Sydney, NSW, 2006, Australia

    T. Honma

  3. Australian Key Centre for Microscopy & Microanalysis and ARC Centre of Excellence for Design in Light Metals, University of Sydney, Sydney, NSW, 2006, Australia

    S. P. Ringer

Authors
  1. K. Xia
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  2. X. Wu
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Correspondence to K. Xia.

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Xia, K., Wu, X., Honma, T. et al. Ultrafine pure aluminium through back pressure equal channel angular consolidation (BP-ECAC) of particles. J Mater Sci 42, 1551–1560 (2007). https://doi.org/10.1007/s10853-006-0819-8

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  • DOI: https://doi.org/10.1007/s10853-006-0819-8

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