Microstructural Properties and Magnetic Testing of Spot-Welded Joints Between Nb-Ti Filaments
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol.26, no.3, 2016 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 26 Issue: 3
- Publication Date: 2016
- Doi Number: 10.1109/tasc.2016.2529290
- Journal Name: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Keywords: Joint microstructure, Nb-Ti joints, persistent current mode, spot welding, superconducting joint, SUPERCONDUCTING JOINT, WIRES
- Karadeniz Technical University Affiliated: Yes
Abstract
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.