Effect of stress on the critical current of Nb/sub 3/Sn multifilamentary composite wire
A critical-current study of flexible Nb/sub 3/Sn multifilamentary composite wires has been conducted at 4 K in magnetic fields to 90 kOe (7.2 x 10/sup 6/ A/m) while the wire is subjected to high mechanical stresses. The results show that at stresses above 1--2 x 10/sup 8/ Pa (strains of 0.1--0.2%) the critical current is significantly degraded, with the magnitude of the reduction dependent on reinforcement techniques used in the wire's construction. The effect increases with magnetic field and results in the introduction of significant resistance at current levels well below the zero-stress critical current. Design considerations for the use of Nb/sub 3/Sn wires in the high-stress environments of large-scale superconducting magnets are discussed. (AIP)
- Research Organization:
- Cryogenics Division, Institute for Basic Standards, National Bureau of Standards, Boulder, Colorado 80302
- OSTI ID:
- 7356951
- Journal Information:
- Appl. Phys. Lett.; (United States), Vol. 029:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
NIOBIUM BASE ALLOYS
CRITICAL CURRENT
SUPERCONDUCTING MAGNETS
COMPOSITE MATERIALS
TIN ALLOYS
MAGNETIC FIELDS
STRESSES
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
TYPE-II SUPERCONDUCTORS
ALLOYS
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EQUIPMENT
MAGNETS
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
SUPERCONDUCTING DEVICES
SUPERCONDUCTORS
WIRES
360104* - Metals & Alloys- Physical Properties
420201 - Engineering- Cryogenic Equipment & Devices
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)
360304 - Composite Materials- Physical Properties- (-1987)