Development of Composite RABiTS Tapes for Coated Conductors

Author

Vorobieva, Alexandra E. ; Abdyukhanov, Ildar M. ; Rakov, Dmitry N. ; Nikolaev, Alexander V. ; Borisov, Alexander V. ; Konovalov, Pavel V. ; Belotelova, Yulia N. ; Drobyshev, Valery A. ; Potapenko, Mihail M. ; Krykova, Lyudmila M. ; Gryaznov, Nikolay S. ;

Author_Institution

Bochvar Inst. of Inorg. Mater., Moscow, Russia

Volume

25

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1

Lastpage

4

Abstract

Substrate materials are the key element of the coated conductors. There are two types of substrates–nontextured (stainless steel (SS) or Hastelloy alloys) and textured ones which are based on the Ni-W alloys. The main requirements for the textured tapes (RABiTS) are the presence of the highly pronounced biaxial cubic texture ${100} < 100>$ and low values of magnetic susceptibility. To realize these requirements RABiTS tapes of various kinds were developed–homogenous tapes from Ni-W alloys with W content 5.5–9 at.% and composite ones. Composite tapes consist of three layers–one of SS and two of Ni-W alloy with W content 6 at.%. Mechanical and magnetic properties of the tapes were investigated and the dependence of tapes texture quality from total accumulated deformations was studied. The ultimate tensile strength value of composite tapes was $750\\pm 10 mbox{MPa}$ . The conditions necessary to form the required ${100} < 100>$ texture are different for the homogeneous and composite tapes. According to the magnetic measurements saturation magnetization of composite tapes is about a factor of two lower than for similar homogeneous tapes.

Keywords

composite materials; high-temperature superconductors; iron alloys; magnetic susceptibility; magnetisation; molybdenum alloys; nickel alloys; stainless steel; superconducting tapes; surface texture; tensile strength; tungsten alloys; Ni-W alloys; NiW; coated conductors; composite RABiTS tapes; highly pronounced biaxial cubic texture; homogeneous composite tapes; magnetic measurements; magnetic properties; magnetic susceptibility; mechanical properties; pressure 750 MPa to 10 MPa; saturation magnetization; substrate materials; texture; texture quality; textured tapes; total accumulated deformations; ultimate tensile strength; Annealing; Conductors; Iron; Nickel; Substrates; Coated conductors; composite tapes; substrate; texture;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2015.2405671

Filename

7045565