Critical current density in wire drawn and hydrostatically extruded Nb-Ti superconductors

Critical current studies have been made on copper-clad Nb-Ti composite wire prepared under area reductions of 10
²
:1 and 10
⁴
:1 by hydrostatic extrusion (HE), wire drawing and HE plus drawing, in a comparative evaluation of the thermomechanical processing equivalent of HE.