A multifilamentary Cu/Nb3Al composite strand was developed with a noncopper critical current density of more than 400 A/mm2 at 12 T, by a jelly-roll process. A 10-kA cable-in-conduit conductor was fabricated to demonstrate its applicability to fusion magnets. The cable had 324 strands, and a circular CuNi seamless pipe was used as the conduit. The strand diameter was 0.88 mm and the filament diameter was 28 μm. The heat treatment was performed at 820°C for 2 h
Published in:
Magnetics, IEEE Transactions on
(Volume:27
,
Issue:
2
)
Date of Publication: Mar 1991