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Modelling microstructure evolution toward ultrafine crystallinity produced by severe plastic deformation

  • Nano May 2006
  • Published:
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An Erratum to this article was published on 15 December 2007

Abstract

The significance of severe plastic deformation by equal channel angular pressing (ECAP) as a promising technique for extreme grain refinement down to sub-micrometer and sometimes nanometer scale is generally recognised. We present a modelling frame for describing ECAP based on microstructure evolution. Following a particular scenario of grain refinement, in which a dislocation cell structure is considered as a ‘precursor’ of the developing grain structure, the variation of the cell size with the number of ECAP passes is traced. Finite element simulations based on the model compare favourably with the experimental data. Further features of the model such as a provision for modelling the variation of the misorientation angle distribution and texture evolution are also discussed.

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Acknowledgements

The authors have greatly benefited from collaboration and innumerable discussions with Y. Bréchet, A. Molinari, L. Tóth, R. Hellmig and many other colleagues to whom they wish to express their sincere gratitude. Financial support from DFG (grant ES 74/12-2) and Korea Research Foundation Grant (KRF−2005-202-D00205) is gratefully acknowledged.

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Authors and Affiliations

  1. Institute of Materials Science and Technology, Clausthal University of Technology, Agricolastrasse 6, 38678, Clausthal, Germany

    Yuri Estrin

  2. Department of Metallurgical Engineering, Chungnam National University, Daejeon, 305-764, Korea

    Hyoung Seop Kim

Authors
  1. Yuri Estrin
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  2. Hyoung Seop Kim
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Corresponding authors

Correspondence to Yuri Estrin or Hyoung Seop Kim.

Additional information

An erratum to this article can be found at http://dx.doi.org/10.1007/s10853-007-2269-3

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Estrin, Y., Kim, H.S. Modelling microstructure evolution toward ultrafine crystallinity produced by severe plastic deformation. J Mater Sci 42, 1512–1516 (2007). https://doi.org/10.1007/s10853-006-1282-2

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  • DOI: https://doi.org/10.1007/s10853-006-1282-2

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