Investigation of the multifilamentary (Nb,Ti)/sub 3/Sn conductors with CuNb reinforced stabilizer

Author

Shikov, A. ; Pantsyrnyi, V. ; Vorobieva, A. ; Silaev, A. ; Belyakov, N. ; Potapenko, I. ; Mareev, K. ; Vdovin, V. ; Nikulin, A. ; Klimenko, E. ; Novikov, S. ; Novikov, M.

Author_Institution

Bochvar Inst. of Inorg. Mater., Moscow, Russia

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1372

Lastpage

1375

Abstract

Multifilamentary Nb/sub 3/Sn superconducting wires with Cu stabilizer reinforced by Cu-16% Nb circular layer and with the filaments artificially doped by Ti were developed. Microstructure, mechanical properties, superconducting parameters of (Nb,Ti)/sub 3/Sn wires with round and rectangular cross sections were investigated. The influence of heat treatment regimes on the wires critical current density in magnetic fields up to 14 T was examined. The changes of critical current density under the axial strain at 4.2 K were analyzed and distinct shift for a higher strains without diminishing of the critical current was confirmed. The comparison of obtained results with the appropriate values for the similar wires without Cu-Nb reinforcement was made. It was shown that the ultimate tensile strength and yield strength for the developed wires were higher in a factor of 1.5.

Keywords

copper alloys; critical current density (superconductivity); crystal microstructure; heat treatment; multifilamentary superconductors; niobium alloys; tensile strength; tin alloys; titanium alloys; type II superconductors; yield strength; (Nb,Ti)/sub 3/Sn wires; (NbTi)/sub 3/Sn-CuNb; 14 T; 4.2 K; Cu stabilizer; Cu-Nb circular layer; Cu-Nb reinforcement; CuNb reinforced stabilizer; axial strain; critical current density; heat treatment regimes; magnetic fields; mechanical properties; microstructure; multifilamentary (Nb,Ti)/sub 3/Sn conductors; multifilamentary Nb/sub 3/Sn superconducting wires; rectangular cross section; round cross section; superconducting parameters; ultimate tensile strength; yield strength; Critical current density; Heat treatment; Magnetic field induced strain; Mechanical factors; Microstructure; Multifilamentary superconductors; Niobium; Superconducting epitaxial layers; Superconducting filaments and wires; Tin;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.620825

Filename

620825