Microstructure and properties of NbTi superconducting composite wire for ITER

Jianfeng Li; Pingxiang Zhang; Xianghong Liu; Jinshan Li; Yong Feng; Tiancheng Wang; Shejun Du; Weitao Liu; G. Grunblatt; C. Verwaerde; G. K. Hoang

Microstructure and properties of NbTi superconducting composite wire for ITER

Jianfeng Li, Pingxiang Zhang, Xianghong Liu, Jinshan Li, Yong Feng, Tiancheng Wang, Shejun Du, Weitao Liu, G. Grunblatt, C. Verwaerde, G. K. Hoang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

This paper shows the results of R&D program carried out to optimize NbTi wires for the Poloidal Field (PF) coils of ITER. The influence of heat treatment on the microstructure was investigated by using TEM to find the relations between the microstructure and the critical current densities at 4.2 K for NbTi superconducting composite wire. Typical microstructure (in transverse cross-section) shows α-Ti pinning centers dispersed within the superconducting β-NbTi matrix with strong fold and curl for the NbTi wire with high critical current density at 4.2 K. It is believed that the higher temperature is beneficial to a higher Jc value at 4.2 K, but the Jc values slightly decrease with increasing the heat treatment times.

Original language	English
Pages (from-to)	263-265
Number of pages	3
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	38
Issue number	2
State	Published - Feb 2009

Keywords

Critical current density
ITER
Microstructure
NbTi superconducting wire

Cite this

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title = "Microstructure and properties of NbTi superconducting composite wire for ITER",

abstract = "This paper shows the results of R&D program carried out to optimize NbTi wires for the Poloidal Field (PF) coils of ITER. The influence of heat treatment on the microstructure was investigated by using TEM to find the relations between the microstructure and the critical current densities at 4.2 K for NbTi superconducting composite wire. Typical microstructure (in transverse cross-section) shows α-Ti pinning centers dispersed within the superconducting β-NbTi matrix with strong fold and curl for the NbTi wire with high critical current density at 4.2 K. It is believed that the higher temperature is beneficial to a higher Jc value at 4.2 K, but the Jc values slightly decrease with increasing the heat treatment times.",

keywords = "Critical current density, ITER, Microstructure, NbTi superconducting wire",

author = "Jianfeng Li and Pingxiang Zhang and Xianghong Liu and Jinshan Li and Yong Feng and Tiancheng Wang and Shejun Du and Weitao Liu and G. Grunblatt and C. Verwaerde and Hoang, {G. K.}",

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T1 - Microstructure and properties of NbTi superconducting composite wire for ITER

AU - Li, Jianfeng

AU - Zhang, Pingxiang

AU - Liu, Xianghong

AU - Li, Jinshan

AU - Feng, Yong

AU - Wang, Tiancheng

AU - Du, Shejun

AU - Liu, Weitao

AU - Grunblatt, G.

AU - Verwaerde, C.

AU - Hoang, G. K.

PY - 2009/2

Y1 - 2009/2

N2 - This paper shows the results of R&D program carried out to optimize NbTi wires for the Poloidal Field (PF) coils of ITER. The influence of heat treatment on the microstructure was investigated by using TEM to find the relations between the microstructure and the critical current densities at 4.2 K for NbTi superconducting composite wire. Typical microstructure (in transverse cross-section) shows α-Ti pinning centers dispersed within the superconducting β-NbTi matrix with strong fold and curl for the NbTi wire with high critical current density at 4.2 K. It is believed that the higher temperature is beneficial to a higher Jc value at 4.2 K, but the Jc values slightly decrease with increasing the heat treatment times.

AB - This paper shows the results of R&D program carried out to optimize NbTi wires for the Poloidal Field (PF) coils of ITER. The influence of heat treatment on the microstructure was investigated by using TEM to find the relations between the microstructure and the critical current densities at 4.2 K for NbTi superconducting composite wire. Typical microstructure (in transverse cross-section) shows α-Ti pinning centers dispersed within the superconducting β-NbTi matrix with strong fold and curl for the NbTi wire with high critical current density at 4.2 K. It is believed that the higher temperature is beneficial to a higher Jc value at 4.2 K, but the Jc values slightly decrease with increasing the heat treatment times.

KW - Critical current density

KW - ITER

KW - Microstructure

KW - NbTi superconducting wire

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M3 - 文章

AN - SCOPUS:65149099615

SN - 1002-185X

VL - 38

SP - 263

EP - 265

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 2

ER -

Microstructure and properties of NbTi superconducting composite wire for ITER

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Keywords

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