DocumentCode
48767
Title
Fabrication and Superconducting Properties of Rod‐In‐Tube Multifilamentary Nb3Al Wire With Rapid Heating and Quenching Heat‐Treatment
Author
Pan, X.F. ; Yan, G. ; Cui, L.J. ; Chen, C. ; Bai, Z.M. ; Li, C. ; Chen, Y.L. ; Zhao, Y. ; Liu, X.H. ; Feng, Y. ; Zhang, P.X.
Author_Institution
Nat. Eng. Lab. for Supercond. Mater. (NELSM), Western Supercond. Technol. Co., Ltd. (WST), Xi´an, China
Volume
25
Issue
3
fYear
2015
fDate
Jun-15
Firstpage
1
Lastpage
4
Abstract
In this paper, we reported the recent progress in developing practical kilometer-length rod-in-tube (RIT) multifilamentary Nb3Al superconducting wires at WST, which included the preparation of Cu/Nb-Al precursor wires, design and manufacture of rapid heating and quenching (RHQ) equipment, and RHQ heat-treatment process of Nb3Al wires. Superconducting properties and microstructure of the RIT Nb3Al wires have been discussed. By measuring magnetization and transport critical current properties of Nb3Al wires, it is found that, for all the samples, the onset superconducting transition temperature Tc reaches 16.8-17.3 K, and at 4.2 K and 15 T, the critical current density Jc of 830 A/mm2 at the Nb3Al wires have been achieved. This paper suggests that it is possible to develop the practical Nb3Al superconducting wires by using the RIT Nb3Al precursor wires, in combination with RHQ heat-treatment process.
Keywords
aluminium alloys; critical current density (superconductivity); crystal microstructure; magnetisation; multifilamentary superconductors; niobium alloys; quenching (thermal); superconducting transition temperature; type II superconductors; Nb3Al; critical current density; kilometer-length rod-in-tube multifilamentary superconducting wires; magnetic flux density 15 T; magnetization; microstructure; precursor wires; quenching heat-treatment; rapid heating; superconducting properties; superconducting transition temperature; temperature 4.2 K; transport critical current properties; Annealing; Electron tubes; Heating; Niobium; Superconducting filaments and wires; Temperature measurement; Wires; Critical current density; Nb3Al wire; Rapid Heating and quenching (RHQ); Rod-in-tube; rapid heating and quenching (RHQ); rod-in-tube;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2014.2372904
Filename
6963275
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