Tensile strain/transverse compressive stress effects in bronze processed Nb-matrix Nb3Sn wires

K. Katagiri, T. Kuroda, H. Wada, H. S. Shin, K. Watanabe, K. Noto, Y. Shoji, H. Seto

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)


Mechanical properties and the strain/stress dependence of the critical current Ic of Nb-matrix Nb3Sn multifilamentary wires fabricated through bronze route were evaluated up to a magnetic field of 14T at 4.2K. The wire showed a 0.2% proof stress of 550MPa, which is 3.4 times higher than that in the conventional bronze processed Nb3Sn wires. The strain sensitivity of Ic and the reversible strain limit, 0.8%, were almost the same, but the axial tensile strain for the peak Ic 0.1%, was small as compared with those in the conventional wires. On the other hand, the transverse compressive stress sensitivity of Ic was remarkably low. The irreversible stress where Ic on unloading no longer recovers to the initial value was larger than 300MPa, which is several times higher than those in conventional wires. Thus, these results show that the wire is highly tolerant to the external stress/strain.

Original languageEnglish
Pages (from-to)1900-1904
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Issue number2 pt 2
Publication statusPublished - 1995 Jun 1
EventProceedings of the 1994 Applied Superconductivity Conference. Part 1 (of 3) - Boston, MA, USA
Duration: 1994 Oct 161994 Oct 21

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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