Effect of Heat Treatment on the Superconducting Properties of V—Ti alloys
The effect of annealing time and temperature on the critical current and superconducting-transformation temperature of V-Ti alloys is studied. Heat treatment raises the critical current of cold-worked alloys. The maximum critical current density at 26.6 kOe (6.1. 104 A/cm2) is achieved in a V alloy containing about 74 wt.% Ti after annealing at 400° for 5 h. The critical temperature of the alloys changes much less. The effect of heat treatment on the superconducting characteristics is associated with the decomposition of the β-solid solution in the cold-worked alloys (degree of deformation 99%) during annealing under the influence of impurities.
KeywordsCritical Current Density Cold Deformation Versus Alloy Critical Magnetic Field Tantalum Foil
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