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Metals and Materials International

, Volume 11, Issue 1, pp 59–62 | Cite as

The influence of cryogenic deformation on Bi2223 superconducting tapes

  • Y. Wang
  • W. Z. Luan
  • Z. Z. Duan
  • R. B. Feng
  • Q. Zhou
  • Y. N. Li
  • Y. X. Yao
  • F. Z. Du
Article

Abstract

The influence of cryogenic deformation on Bi2223 superconducting tapes has been investigated in this paper. Mechanical deformation was carried out on Ag-sheathed mono- and multi- filamentary tapes and silver alloy-sheathed multi- filamentary tapes at liquid nitrogen temperature (77 K) and room temperature, respectively. Results show that the critical current of the Bi2223 tapes is significantly enhanced by cryogenic deformation. SEM microstructure observations show that the cryogenic-tapes have higher core density, smoother silver/superconductor interface, and better grain alignment. Tensile tests indicate that the tapes pressed at liquid nitrogen temperature have better tensile behavior than those pressed at room temperature.

Keywords

cryogenic deformation Bi2223 tape SEM microstructure critical current (Icmechanical property 

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Copyright information

© Springer 2005

Authors and Affiliations

  • Y. Wang
    • 1
  • W. Z. Luan
    • 1
  • Z. Z. Duan
    • 1
  • R. B. Feng
    • 1
  • Q. Zhou
    • 1
  • Y. N. Li
    • 1
  • Y. X. Yao
    • 1
  • F. Z. Du
    • 1
  1. 1.General Research Institute for Nonferrous MetalsBeijingChina

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