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Highly-strengthened alumina-copper alloy matrix (Nb,Ti)3Sn conductor fabricated by using the tube process

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8 Author(s)
Murase, S. ; Toshiba Corp., Kawasaki, Japan ; Nakayama, S. ; Yamada, Y. ; Shimamura, K.
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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

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 4 )