Critical current of a rapid-quenched Nb3Al conductor under transverse compressive and axial tensile stress
作者： B Seeber , A Ferreira , G Mondonico , F Buta , C Senatore
DOI: 10.1088/0953-2048/24/3/035011
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摘要: The electromechanical behavior of a Nb3Al wire manufactured according to the RHQT process (rapid-heating, quenching and transformation) has been investigated at magnetic fields between 15 19 T 4.2 K. Of particular interest was critical current, Ic, as function transverse pressure up 300 MPa axial tensile stress. studied wires are pieces 870 m long copper stabilized with rectangular cross section 1.81 mm × 0.80 mm. It observed that current pressure, applied narrow side, is reduced 93%, 90% 88% its stress free value T, 17 respectively. After unloading from Ic recovers 94% 97% A field dependence effect visible above 200 MPa. For completeness, also measured under strain. maximum 0.15% strain irreversibility 0.26%. Finally versus measurement K carried out allowing conversion
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