Superconductivity under uniaxial tensile strain on internal reinforced Nb3Sn multifilamentary wire using Cu-Sn-Zn ternary alloy matrix

Yoshimitsu Hishinuma, Hidetoshi Oguro, Hiroyasu Taniguchi, Satoshi Awaji, Akihiro Kikuchi

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The degradations of superconducting properties by mechanical strain on actual Nb3Sn wire are a serious problem for the future fusion magnets operated under high electromagnetic force. Recently, we succeeded to fabricate Cu-Sn-Zn ternary alloy matrix, which is high strength alloy by the Zn solid solution strengthening, based on the internal reinforced bronze process in order to investigate the mechanical strength improvement. In this study, the upper critical magnetic field (Hc2) under uniaxial tensile deformation on several bronze-processed Nb3Sn multifilamentary wires were evaluated. We confirmed that the peak tensile strain values, which obtained maximum Hc2 under uniaxial tensile deformation, were shifted to higher tensile strain region with increasing amount of Zn composition in the Cu-Sn-Zn ternary alloy matrix. The internal reinforced bronze matrix via solid solution strengthening would become attractive and simple method without reinforcement material.

Original languageEnglish
Article number012175
JournalIOP Conference Series: Materials Science and Engineering
Volume502
Issue number1
DOIs
Publication statusPublished - 2019 Jun 3
Event27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018, ICEC-ICMC 2018 - Oxford, United Kingdom
Duration: 2018 Sep 32018 Sep 7

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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