Abstract
The process of texture formation in tapes made of a number of binary and ternary copper alloys upon cold rolling to degrees of deformation of 98.6–99% and subsequent recrystallization annealing has been studied. The possibility of designing multicomponent alloys based on the binary Cu-30% Ni alloy additionally alloyed with elements that strengthen the fcc matrix, such as iron or chromium, has been shown. The opportunity of obtaining a perfect cube texture in a thin tape made of binary and ternary copper alloys opens prospects for their use as substrates in the technology of second-generation HTSC cables. Optimum regimes of annealing have been determined, which make it possible to obtain in the Cu-M and Cu-(30–40)Ni-M (M = Fe, Cr, Mn) alloys a perfect biaxial texture with the fraction of cube grains {001}〈100〉 on the surface of the tape more than 94%. The estimation of the mechanical properties of the textured tapes of the investigated alloys demonstrates a yield strength that is 2.5–4.5 times greater than that in the textured tape of pure copper.
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Original Russian Text © Yu.V. Khlebnikova, D.P. Rodionov, I.V. Gervas’eva, T.R. Suaridze, L.Yu. Egorova, Yu.N. Akshentsev, V.A. Kazantsev, 2015, published in Fizika Metallov i Metallovedenie, 2015, Vol. 116, No. 1, pp. 91–100.
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Khlebnikova, Y.V., Rodionov, D.P., Gervas’eva, I.V. et al. Texture and mechanical properties of tape substrates from binary and ternary copper alloys for second-generation high-temperature superconductors. Phys. Metals Metallogr. 116, 87–96 (2015). https://doi.org/10.1134/S0031918X1501007X
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DOI: https://doi.org/10.1134/S0031918X1501007X