Title :
Mechanical properties of a niobium-tin superconductor reinforced by tantalum cores
Author :
Kondoh, J. ; Tateishi, H. ; Umeda, M. ; Arai, K. ; Agatsuma, K. ; Gotoh, K. ; Saitoh, T.
Author_Institution :
Electrotech. Lab., Tsukuba, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
We have been developing fiber-reinforced type of niobium-tin superconductor for large scale high field magnets. In this conductor, each niobium-tin filament has a tantalum core. Tantalum is selected as material for the core since it has good ductility with mechanical strength and hence a conventional drawing method can be applied to fabricate a conductor. Stress-strain characteristics and the irreversible strain limits of the conductor with different heat-treatment conditions are measured. Combining these results, discussions about the mechanical properties of the conductor are presented
Keywords :
composite superconductors; fibre reinforced composites; heat treatment; niobium alloys; stress-strain relations; tantalum; tin alloys; Nb3Sn; Ta; drawing method; ductility; fiber-reinforced type; heat-treatment conditions; irreversible strain limits; large scale high field magnets; mechanical properties; mechanical strength; niobium-tin superconductor; stress-strain characteristics; tantalum cores; Conducting materials; Large-scale systems; Magnetic cores; Magnetic materials; Mechanical factors; Niobium-tin; Strain measurement; Superconducting filaments and wires; Superconducting magnets; Superconducting materials;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
