Nanostructure of superconducting Nb-Ti cable

被引：0
|
作者：
Shlyakhova G.V. [1 ,2 ]
Barannikova S.A. [1 ,3 ,4 ]
Zuev L.B. [1 ,3 ]
机构：
[1] Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Tomsk
[2] Seversk Technological Institute, Moscow Engineering-Physics Institute, Moscow
[3] Tomsk State University, Tomsk
[4] Tomsk State Architectural and Construction University, Tomsk
来源：
Steel Transl. | 2013年 / 10卷 / 640-643期
基金：
俄罗斯基础研究基金会;
关键词：
defects; drawing; localized plastic deformation; microstructure; superconductors;
D O I：
10.3103/S0967091213100124
中图分类号：
学科分类号：
摘要：
Scanning-probe, electron, and optical microscopes are used to study the structural evolution in the intermediate stage of drawing (to diameter 1.3-1.2 mm) for superconducting cable based on Nb-Ti alloy (47.5 wt % Ti or, equivalently, 63.7 at % Ti). Such cable is used for current transmission in the magnetic system of the International Thermonuclear Experimental Reactor (ITER). The microstructure and phase composition of the superconducting alloy are investigated, as well as their influence on its properties after cold drawing and intermediate annealing. Zones where plastic deformation is localized are found at breaks in the super-conductor. The variation in shape and chemical composition of Nb-Ti fibers is studied in a defect-free region and in the fracture zone of the cable. A diffusional niobium barrier is identified around the Nb-Ti fibers in the copper matrix. © 2013 Allerton Press, Inc.
引用
收藏
页码：640 / 643
页数：3
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