Effects of bending on the superconducting critical current density of monofilamentary Nb3Sn wires
- 1 February 1980
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 36 (3) , 223-225
- https://doi.org/10.1063/1.91433
Abstract
Variations in the superconducting current density Jc of the Nb3Sn wires upon bending were measured for a series of monofilamentary wires in which the ratio Rv of the matrix (Cu+Sn) to the core (Nb3Sn,Nb) was changed from 0 to 58. In most cases Jc was found to increase slightly until the bending strain exceeded a value of εirrB , beyond which it severely and irreversibly degraded. For wires with intermediate values of Rv (∼2 to 10), εirrB , calculated by geometrical considerations, was substantially lower than the measured value of the tensile strain εirrT which was required to irreversibly degrade the critical current. The influence of bending strains on Jc can qualitatively be described by considering residual prestrains in the matrix and the core.Keywords
This publication has 2 references indexed in Scilit:
- Degradation mechanism of Nb3Sn composite wires under tensile strain at 4.2KIEEE Transactions on Magnetics, 1979
- Improvement of the critical current of multifilamentary Nb3Sn conductors under tensile stressIEEE Transactions on Magnetics, 1977