Open AccessFine structural characterization of the elements of a Nb-Ti superconducting cable
Author(s) -
С. А. Баранникова,
Galina Schlyakhova,
O. A. Maslova,
Yulia Li,
Zuev Lev
Publication year - 2018
Publication title -
journal of materials research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.832
H-Index - 44
eISSN - 2214-0697
pISSN - 2238-7854
DOI - 10.1016/j.jmrt.2018.02.004
Subject(s) - materials science , niobium , microstructure , superconductivity , breakage , deformation (meteorology) , titanium alloy , titanium , thermonuclear fusion , niobium tin , alloy , characterization (materials science) , metallurgy , composite material , optical microscope , scanning electron microscope , superconducting magnet , nanotechnology , condensed matter physics , plasma , physics , quantum mechanics
A niobium-titanium alloy (Nb + 47%Ti) superconducting cable that acts as a current-carrying element in the magnetic system of the international thermonuclear experimental reactor (ITER) has been subjected to cold deformation by drawing. Its microstructure, phase composition and properties have been monitored via atomic force microscopy, electron microscopy and optical microscopy methods at the intermediate stage of cold drawing upon the transition of O1.3 → O1.2 mm. Plastic deformation centers are established to be localized at the breakage sites of the cable, and the shape and chemical composition of Nb-Ti fibers are determined at the defect-free region and breakage sites, as well. A partial lack of diffusion Nb barriers is also highlighted around Nb-Ti fibers at the breakage sites.
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