Title :
Highly-strengthened alumina-copper alloy matrix (Nb,Ti)3Sn conductor fabricated by using the tube process
Author :
Murase, S. ; Nakayama, S. ; Yamada, Y. ; Shimamura, K. ; Tezuka, M. ; Shiga, N. ; Watanabe, K. ; Kobayashi, N.
Author_Institution :
Toshiba Corp., Kawasaki, Japan
fDate :
7/1/1996 12:00:00 AM
Abstract :
In order to fabricate a large-bore, high-field magnet which achieves a low foil weight and volume, a high strength compound superconducting wire is required. The alumina-copper strengthened (Nb,Ti)3Sn wire which contained 30 vol.% alumina-Cu alloy fabricated by using the tube process has been developed and tested for critical current density, mechanical properties, transverse compressive stress effects and related properties. As a result, it was found that the reinforced (Nb,Ti)3Sn wire had high transverse compressive stress tolerance, for example only 3% decrease which was 1/3 of the Cu matrix wire in Ic/Ic0 at 60 MPa and reversibility in Ic between 0 and 200 MPa. Using the newly developed reinforced-(Nb,Ti)3Sn wire, it will be possible to fabricate a lightweight, large-bore, high-field and compact superconducting magnet in the near future
Keywords :
alumina; copper alloys; critical current density (superconductivity); hardness; high-pressure effects; multifilamentary superconductors; niobium alloys; tensile strength; tin alloys; titanium alloys; type II superconductors; yield strength; (Nb,Ti)3Sn conductor; (NbTi)3Sn; 0 to 200 MPa; 60 MPa; Al2O3-Cu; critical current density; high strength compound superconducting wire; highly-strengthened alumina-Cu alloy matrix; large-bore high-field magnet fabrication; low foil weight; mechanical properties; transverse compressive stress effects; tube process; Compressive stress; Conductors; Copper alloys; Magnetic materials; Mechanical factors; Superconducting coils; Superconducting filaments and wires; Superconducting magnets; Superconducting materials; Tin;
Journal_Title :
Magnetics, IEEE Transactions on
