Superconducting and Mechanical Properties of Cold Hydrostatically Extruded Monofilamentary Nb sub 3 Sn Wires.

摘要

A series of Nb sub 3 Sn monofilamentary wires were prepared both by cold hydrostatic extrusion and wire drawing. The bronze-to-niobium ratios of these conductors varied from 2 to 18. A comparison between the two fabrication processes showed that hydrostatic extrusion shortened the manufacturing procedure. Further, strain tolerance of J/sub c/ at 4.2 exp 0 K and 8T for the hydrostatically extruded wires compared favorably with the drawn material. Studies of the bronze-niobium interface, the Nb sub 3 Sn growth rate and the microhardness of the constituents were also carried out. (ERA citation 07:047332)