Microstructural Properties and Magnetic Testing of Spot-Welded Joints Between Nb-Ti Filaments


Brittles G. D. , Aksoy C., Grovenor C. R. M. , Bradshaw T., Milward S., Speller S. C.

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, cilt.26, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 26 Konu: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1109/tasc.2016.2529290
  • Dergi Adı: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY

Özet

The production of persistent-mode joints between Nb-Ti conductors remains an important problem in the field of superconducting magnets. Several researchers have demonstrated spot welding (resistance welding) as a technique capable of yielding superconducting joints directly between Nb-Ti filaments. In this study, the characteristic microstructural features associated with spot-welded joints between both multifilamentary and monofilamentary Nb-Ti wires are presented. Some initial measurements of the current-carrying ability of a monofilamentary joint have also been made by a novel magnetic technique. The suitability of spot welding for commercial magnet manufacture is discussed.