Creating textured substrate tapes of Cu-Fe alloys for second-generation high-temperature superconductors |
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Authors: | Yu V Khlebnikova I V Gervas’eva T R Suaridze D P Rodionov L Yu Egorova |
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Affiliation: | 1. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620041, Russia
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Abstract: | It is established that Cu-1.6 at % Fe alloy tapes obtained through cold rolling to 98.9% followed by recrystallization annealing possess a sharp cube texture, which opens prospects of using thin tapes of this alloy as substrates for second-generation high-temperature superconductors. The optimum regime of annealing is determined that allows an alloy with sharp biaxial texture containing more than 97% cubic grains to be obtained. The yield stress of a 90-μm-thick Cu-1.6 at % Fe alloy tape upon recrystallization annealing at 800°C for 1 h amounts to 78 MPa, which is about three times higher than the value for a pure copper tape with sharp cube texture. |
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