## Abstract

We developed advanced (Nb,Ti) _{3}Sn multifilamentary superconducting wires with 1 mm in diameter and 3 km in length, which were reinforced and stabilized with Cu-20wt.%Nb composite, CuNb/(Nb,Ti) _{3}Sn. In comparison with practical (Nb,Ti) _{3}Sn wires with conventional Cu stabilizer, Cu/(Nb,Ti) _{3}Sn, it is found that a 0.2% proof stress of 240 MPa for CuNb/(Nb,Ti) _{3}Sn after heat-treatment at 670°C for 200 h is twice as strong as that for Cu/(Nb,Ti) _{3}Sn. CuNb composite has good thermal conductivity of 200 W/m/K at 4.2 K and low resistivity of 0.16 μΩ·cm at 4.2 K and 15 T. The minimum quench energy of 2.7 mJ at 80% of the critical current at 14 T for CuNb/(Nb, Ti) _{3}Sn is a factor of two smaller than for Cu/(Nb,Ti) _{3}Sn, while the normal zone propagation velocity of 2 m/s remains the same.

Original language | English |
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Pages (from-to) | 561-566 |

Number of pages | 6 |

Journal | Materials Science Forum |

Volume | 308-311 |

Publication status | Published - 1999 Jan 1 |

Event | Proceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 - Dresden, Ger Duration: 1998 Oct 26 → 1998 Oct 29 |

## ASJC Scopus subject areas

- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering

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