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Scientific article
English

Transport Properties of a PIT-Nb3Sn Strand Under Transverse Compressive and Axial Tensile Stress

Published inIEEE transactions on applied superconductivity, vol. 18, no. 2, p. 976-979
Publication date2008
Abstract

A study of the critical current of a PIT strand under transverse compressive and axial tensile loads is presented. The conductor is not reinforced and has a proof strength, , of 142 MPa. Although the tensile strain at the maximum of the critical current, , is only 0.14% (low thermal precompression) the strand behaves as expected. However it is particularly sensitive to transverse compressive forces. Even relatively small forces yield to a reduction of the critical current. Qualitatively this degradation may be explained by a non-uniform deformation of filaments, yielding to irreversible micro cracks, and by a reduced of intact filaments. The recovery of upon unloading of the transverse compressive force has also been investigated.

Keywords
  • Niobium alloys
  • Superconducting materials measurements
  • Superconducting materials mechanical factors
  • Superconducting wires.
Research group
Citation (ISO format)
SEEBER, Bernd et al. Transport Properties of a PIT-Nb<sub>3</sub>Sn Strand Under Transverse Compressive and Axial Tensile Stress. In: IEEE transactions on applied superconductivity, 2008, vol. 18, n° 2, p. 976–979. doi: 10.1109/TASC.2008.921367
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ISSN of the journal1051-8223
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