NDLI: The Effect of Thermo-Mechanical Treatments on <formula formulatype=inline><tex Notation=TeX>$J_{c}(T,B)$</tex></formula> and <formula formulatype=inline><tex Notation=TeX>$T

Content Provider	IEEE Xplore Digital Library
Author	Shikov, A.K. Pantsyrny, V.I. Kozlenkova, N.I. Potanina, L.V. Vasilyev, R.M. Gubkin, I.N. Nikulenkov, E.V. Emhofer, J. Eisterer, M. Weber, H.W.
Copyright Year	2002
Abstract	An extended database of critical current densities J _c(T,B) and current sharing temperatures T_cs for Nb-Ti strands was obtained in this work. This data set allows one to make a more realistic forecast of the ITER poloidal field (PF) coil critical current at temperatures above 6 K and in a magnetic field of 6 T. It is found that Jc (4.2 K, 5 T) lies in the range from 700 to 2950 A/mm², depending on the heat treatment regimes, and that J_c(6.5 K, 6 T) is 28 to 54 A/mm² almost regardless of the applied heat treatment, i.e. the microstructure does not significantly affect J_c(6.5 K, 6 T) under such ldquoextremerdquo conditions. It is shown, that T _cs (6 T) at a current of 31.2 A, which is close to the assumed operating current for the strand in the ITER PF1&6 coils, is 6.1-6.25 K. It is shown furthermore, that the application of multiparametric functions for the description of J _c(T, B) or V(I, T, B) leads to a reliable prediction of J_c(T, B) only in a temperature and field range, where experimental data points are available (extrapolations result in large deviations).
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2540
Ending Page	2543
Page Count	4
File Size	221896
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermomechanical processes Coils Temperature distribution Heat treatment Image databases Critical current density Critical current Temperature dependence Magnetic fields Microstructure temperature magnetic field NbTi strand
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Jc(T,B) and E(T) Dependencies for NbTi Strands Used in ITER PF Insert Coil

The ${rm J}_{rm c}({rm B},{rm T})$ Characterization of Commercial NbTi Strands for ITER PF 1&6 Coils

Characterization of Nb–Ti Strands in the Process of Industrial Production for the ITER Poloidal Field Coils

$J_{rm c}(B, T)$ Characterization of Commercial NbTi Strands for the ITER Poloidal Field Coils by Transport and Magnetization Methods

Study of the Temperature and Field Dependence of the Critical Currents in Nb-Ti Strands for the ITER Poloidal Field Magnet System

Dependence of critical current density on temperature and magnetic field in multifilamentary Nb/sub 3/Al strands made by the Jelly roll process

Investigation on I/sub c/(B, T), H/sub c2/(T), and microstructure of internal-tin Nb/sub 3/Sn wires

Temperature dependence of critical current density for Nb3Sn and Nb + 60 wt% Ti superconducting alloys

Temperature and magnetic field dependence of the critical current density for a mass-produced Nb/sub 3/Al multifilamentary strand fabricated by a jelly-roll method [for ITER]

The Effect of Thermo-Mechanical Treatments on $J_{c}(T,B)$ and $T_{cs}$ of Nb-Ti Strands

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Jc(T,B) and E(T) Dependencies for NbTi Strands Used in ITER PF Insert Coil

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