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Electrical Characteristics of Al-Y Dilute Alloys under Low-Temperature Plastic Deformation

  • Sergey Demyanov
  • Alexander Drozd
  • Alexander Petrov
  • Sergey Zakatov
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

Highly pure Al alloyed with 0.001 to 0.1 mass % Y was studied to determine the optimal combination of electrical and mechanical properties required for its application as a cryoconductor in powerful electromagnetic systems. The experimental conditions approximated solenoid-winding operational conditions: transverse magnetic fields as high as 8 T, temperature range of 4 to 77 K, and low-temperature plastic deformation. From the data obtained, we were able to determine the deformation contribution to electrical resistivity and to define its temperature and magnetic field dependences for Al containing different amounts of Y. Annealing the specimens at room temperature for 48 h enabled us to derive dislocation and point-defect parts of deformation-induced resistivity, which in turn, enabled us to analyze the electron-phonon, electron-dislocation, and electron-defect scattering processes and to differentiate the relaxation mechanisms of conduction electrons with and without magnetic fields. Results showed that Y additions to Al lead to suppression of inelastic scattering mechanisms, even in strong magnetic fields, without a substantial loss of electrical conductivity.

Keywords

Electrical Resistivity Strong Magnetic Field Transverse Magnetic Field Deformation Part Residual Resistivity Ratio 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Sergey Demyanov
    • 1
  • Alexander Drozd
    • 1
  • Alexander Petrov
    • 1
  • Sergey Zakatov
    • 1
  1. 1.Cryogenic Research DepartmentInstitute of Physics of Solids and SemiconductorsMinskBelarus

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