Strain tolerances in Nb/sub 3/Sn conductors

Conference · Fri Jan 01 04:00:00 EST 1982 · Adv. Cryog. Eng.; (United States)

OSTI ID:6268465

Luhman, T

This paper reviews the literature pertinent to the effect of strain on the critical currents of a variety of differently heat-treated multifilamentary Nb/sub 3/Sn superconductors. The dependence of the critical currents on the parameters of uniaxial, tensile, bending, and intrinsic strains, and on temperature and composite ratio variations, is both plotted and analyzed. A review of specific efforts to enhance the strain tolerances of Nb/sub 3/Sn superconductors is given. Those efforts include 1) the approach of minimizing an accomodating plastic flow in the bronze during a cooldown from the reaction heat treatment temperaure by alloying the bronze with Be; 2) the method of jacketing a conductor with stainless steel to enhance the effect R /SUB v/ ; and 3) the ''wind and react'' approach, or the procedure olf vacuum-impregnating the coil windings with epoxy following the reaction heat treatment.

• Research Organization: Brookhaven National Laboratory, Upton, NY
• OSTI ID: 6268465
• Report Number(s): CONF-810835-
• Conference Information: Journal Name: Adv. Cryog. Eng.; (United States) Journal Volume: 28
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COMPOSITE MATERIALS
CRITICAL CURRENT
CRYOGENICS
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
MATERIALS
MATERIALS TESTING
METALLURGICAL EFFECTS
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
STRAINS
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
TESTING
TIN ALLOYS
TOLERANCE