Title :
The influence of compressive and tensile axial strain on the critical properties of Nb/sub 3/Sn conductors
Author :
Ten Haken, B. ; Godeke, A. ; ten Kate, H.H.
Author_Institution :
Appl. Supercond. Centre, Twente Univ., Enschede, Netherlands
fDate :
6/1/1995 12:00:00 AM
Abstract :
Various Nb/sub 3/Sn conductors are investigated in an axial strain experiment. The superconducting samples are soldered to a substrate that is bent to generate a compressive or tensile axial strain. Especially in the compressive strain range the critical current reduction is smaller than predicted by the well-known scaling law. The influence of the transverse strain components is investigated in a tape conductor by changing the thermal strain. It is found that the axial strain experiments can be described by an upper-critical field that depends on the deviatoric component of the strain tensor only. Finally a comparison of the critical temperature and the critical current as a function of axial strain is made.<>
Keywords :
critical currents; deformation; multifilamentary superconductors; niobium alloys; superconducting critical field; superconducting tapes; superconducting transition temperature; tin alloys; type II superconductors; Nb/sub 3/Sn; compressive axial strain; critical current; critical temperature; superconducting samples; tape conductor; tensile axial strain; thermal strain; transverse strain components; upper-critical field; Capacitive sensors; Conductors; Critical current; Niobium; Superconducting films; Temperature; Tensile strain; Tensile stress; Thermal conductivity; Tin;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
