Stress/strain dependence of critical current in Nb3Sn superconducting wires stabilized with Cu-Nb microcomposites - Effect of Nb content

K. Kasaba, K. Katagiri, Y. Shoji, T. Takahashi, K. Watanabe, K. Noto, K. Goto, T. Saito, O. Kono

研究成果: Article査読

11 被引用数 (Scopus)

抄録

The effects of niobium content in the Cu-Nb microcomposite on the mechanical property and the axial tensile or transverse compressive stress/strain characteristics of the critical current Ic in a bronze processed Nb3Sn multifilament superconducting wire with the Cu-Nb microcomposite were evaluated at a temperature of 4.2 K in a magnetic field of 14 T. An increase in niobium content increases the 0.2% proof stress as well as both tensile and transverse compressive stress tolerance of Ic of the wire. High yield stress value of the Cu-Nb microcomposite increases the strain at peak Ic, εm, as well as the reversible strain limit of Ic, εirr in the wire as compared to those in the Cu stabilized wire. An increase in niobium content in Cu-Nb microcomposite, however, decreases them due to decrease in the coefficient of thermal expansion.

本文言語English
ページ(範囲)9-14
ページ数6
ジャーナルCryogenics
41
1
DOI
出版ステータスPublished - 2001 1月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 物理学および天文学(全般)

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