The development of the in situ process for production of high field Nb3Sn-Cu superconducting wire is described. In the utilization of multidie drawing equipment for reduction of Cu-Nb alloy castings to wire size, even though the alloy is quite ductile, it is desirable to utilize some intermediate anneals to insure zero breakage. It is shown that these anneals can be controlled to improve the J sub c properties of the wire. A technique is presented for the production of a cryostabilized in situ wire which is compatible with large scale production methods. The technique utilizes a combination of rolling and extrusion to produce wire with a stabilizing Cu core.
Presented at 1981 Cryogenic Engr. Conf
- Pub Date:
- Niobium Stannides;
- Metal Drawing;
- Metal Working;
- Electronics and Electrical Engineering