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, sa.3, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1109/tasc.2016.2529290
  • Dergi Adı: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Joint microstructure, Nb-Ti joints, persistent current mode, spot welding, superconducting joint, SUPERCONDUCTING JOINT, WIRES
  • Karadeniz Teknik Üniversitesi Adresli: Evet

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.