Transverse stress effect on the critical current of jelly-roll multifilamentary Nb sub 3 Al wires

Journal Article · Mon Jul 30 00:00:00 EDT 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.104241· OSTI ID:6537374

Zeritis, D; Ando, T; Takahashi, Y; Nishi, M; Nakajima, H; Shimamoto, S ^[1]

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1. Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken 311-01 (Japan)

Experiments were conducted to determine the transverse stress sensitivity of the critical current ({ital I}{sub {ital c}}) of jelly-roll multifilamentary Nb{sub 3}Al wires at 8 and 12 T. For comparison, similar experiments were conducted on bronze-process (NbTi){sub 3}Sn wires. At 12 T and under a transverse compressive stress of 150 MPa{emdash}conditions expected in fusion magnets{emdash}the {ital I}{sub {ital c}} degradation of the Nb{sub 3}Al specimen was {similar to}20% vs {similar to}65% for the (NbTi){sub 3}Sn specimen. The intrinsic superiority of Nb{sub 3}Al over (NbTi){sub 3}Sn with regard to transverse compressive stress is thus clear. There is optimism that Nb{sub 3}Al will eventually become a useful superconductor for large-scale, high-field applications.

• OSTI ID: 6537374
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 57:5; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ALUMINIUM ALLOYS
CRITICAL CURRENT
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
MAGNETIC PROPERTIES
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
STRESSES
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
WIRES