Abstract
The nonuniformity in the distribution of Zr and Nb at various points of an Nb—Zr ingot and forged alloy bars is determined to an accuracy of 0.35% by an x-ray method. A camera attachment is devised for continuously monitoring the homogeneity of the structure of a fine wire without damaging the latter. The methods of measuring the thermo-emf and electrical resistance at liquid-nitrogen temperature are extremely suitable for revealing inhomogeneities of the structure in wires subjected to heat treatment. These are very sensitive and well-adapted to the continuous monitoring of long pieces of wire. The results of wire-homogeneity measurements carried out in this way are compared with the degradation of the critical current in solenoids and with critical-current measurements made along the whole length of the wire.
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Literature Cited
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Bychkov, Y.F., Zuev, M.T., Sokolov, N.A., Baranov, I.A., Shmulevich, R.S. (1970). Use of Physical Methods for Revealing Inhomogeneities in the Composition and Structure of Zr—Nb Alloys. In: Savitskii, E.M., Baron, V.V. (eds) Physics and Metallurgy of Superconductors / Metallovedenie, Fiziko-Khimiya I Metallozipika Sverkhprovodnikov / Металловедение Физико-Химип и Металлофизика Сверхпроводников. Springer, New York, NY. https://doi.org/10.1007/978-1-4684-8220-1_34
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DOI: https://doi.org/10.1007/978-1-4684-8220-1_34
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4684-8222-5
Online ISBN: 978-1-4684-8220-1
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