Low-Temperature Plastic Deformation and Resistivity of Coarse-Grain Pure Aluminum

  • S. E. Demyanov
  • M. L. Petrovskii
  • A. V. Petrov
  • S. P. Zakatov
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 44)


A characteristic feature of high-purity aluminum conductors is a high plasticity combined with large crystallites (≥ 1 mm). Low-temperature plastic deformation of these materials produces special features that are characteristic of both single crystals and fine-grain polycrystals. In this study, we investigated deformed polycrystals with different grain sizes and determined that the electrical and plastic properties of coarse-grain specimens are not simply values between those of single and polycrystals. At certain strains over the broad deformation range, large peaks in resistivity occurred that were correlated to large-grain orientation with respect to the deformation axis. Two plastic-deformation mechanisms based on the measured local deformation in the grains are discussed. The first mechanism is based on the assumption that high-density dislocation clusters exist in the near-boundary region; the second, on the possibility of grain rotation on the unstrengthened boundary.


Electrical Resistivity Local Deformation Resistivity Peak Dislocation Mechanism Deformation Dependence 
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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • S. E. Demyanov
    • 1
  • M. L. Petrovskii
    • 1
  • A. V. Petrov
    • 1
  • S. P. Zakatov
    • 2
  1. 1.Institute of Physics of Solids and Semiconductors NASMinskBelarus
  2. 2.Laboratory of New Technologies and ProductsMoscowRussia

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