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

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....

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Published in:IEEE transactions on applied superconductivity 2016-04, Vol.26 (3), p.1-4
Main Authors: Brittles, G. D., Aksoy, C., Grovenor, C. R. M., Bradshaw, T., Milward, S., Speller, S. C.
Format: Article
Language:English
Subjects:
Current measurement
joint microstructure
Magnetic field measurement
Microstructure
Nb-Ti joints
persistent current mode
Spot welding
superconducting joint
Superconducting magnets
Temperature measurement
Wires
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container_title IEEE transactions on applied superconductivity
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creator Brittles, G. D.
Aksoy, C.
Grovenor, C. R. M.
Bradshaw, T.
Milward, S.
Speller, S. C.
description 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.
doi_str_mv 10.1109/TASC.2016.2529290
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subjects Current measurement
joint microstructure
Magnetic field measurement
Microstructure
Nb-Ti joints
persistent current mode
Spot welding
superconducting joint
Superconducting magnets
Temperature measurement
Wires
title Microstructural Properties and Magnetic Testing of Spot-Welded Joints Between Nb-Ti Filaments
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