Axial tensile strain/transverse compressive stress characteristics in high strength Nb3Sn superconducting wires

K. Katagiri, K. Watanabe, T. Kuroda, K. Kasaba, K. Noto, T. Okada, O. Kohno

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In order to improve the strain/stress characteristics of the critical current Ic, the availability of Nb matrix as well as the external CuNb reinforcing stabilizer to bronze processed Nb3Sn multifilamentary superconducting wires has been examined up to the magnetic field of 14T and at a temperature of 4.2K. Although the axial tensile strain sensitivity of Ic does not change, the strain for peak Ic as well as the reversible strain limit increase in the wire with CuNb reinforcing stabilizer. Furthermore, the transverse compressive stress sensitivity of Ic decreases and the reversible stress limit increases. Although critical current density is not high, the Nb matrix Nb3Sn wire shows higher tolerance to stress / strain. Correlation between axial strain effect and transverse compressive stress effect is briefly discussed.

Original languageEnglish
Pages (from-to)381-388
Number of pages8
JournalScience Reports of the Rerearch Institutes Tohoku University Series A-Physics
Volume42
Issue number2
Publication statusPublished - 1996 May 1

Keywords

  • Critical current
  • NbSn superconducting wire
  • Reinforcement
  • Strain effect
  • Transverse stress effect

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys

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