Effects of stresses, induced by thermal contraction of a bronze matrix, on the superconducting properties of Nb3Sn wires
- 1 July 1976
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 29 (1) , 61-63
- https://doi.org/10.1063/1.88883
Abstract
The superconducting critical temperature Tc and high‐magnetic‐field critical‐current densities Jc have been measured on bronze‐processed Nb3Sn single‐core wires prior to and after removing the bronze cladding. Both Tc and Jc, at high magnetic fields, are increased after removal of the cladding. Tc measurements on a series of wires with various core‐to‐matrix ratios R show that the depression in Tc increases as R decreases. The results are interpreted in terms of a stress imposed on the Nb3Sn layer by the thermal contraction of the outer bronze cladding. Results point to the possibility of a martensitic phase transformation occurring in the bronze‐clad Nb3Sn wires.Keywords
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