Abstract
A comparison of high field, low temperature superconducting properties between a Nb47 w/o Ti and two NbTiTa alloys as bases of laboratory scale cables was carried out Optimization cycles needed to obtain fair superconducting properties imply intermediate thermal treatments in the range 380–400°C during deformation at cold-work of 70%. The ternary alloys exhibit excellent ductile properties as do NbTi alloys. After an adequate optimization cycle the alloy Nb38 w/o Ti34 w/o Ta showed the best high field superconducting properties with values of more than 600 A mm −2 at 12 Tesla and 2.15 K.
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