The microstructure of NbTi superconducting composite wire for ITER project

J. F. Li; P. X. Zhang; X. H. Liu; J. S. Li; Y. Feng; S. J. Du; T. C. Wang; W. T. Liu; G. Grunblatt; C. Verwaerde; G. K. Hoang

doi:10.1016/j.physc.2008.05.096

The microstructure of NbTi superconducting composite wire for ITER project

J. F. Li, P. X. Zhang, X. H. Liu, J. S. Li, Y. Feng, S. J. Du, T. C. Wang, W. T. Liu, G. Grunblatt, C. Verwaerde, G. K. Hoang

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

27 引用（Scopus）

摘要

This paper presents early results of the R&D programme carried out to optimize NbTi wires for the ITER poloidal field coils (PF). Using TEM, the influence of treatment conditions on the microstructure was investigated. The purpose is to find relations between the alloy microstructure and the NbTi wire critical current densities at 4.2 K. Typical NbTi with high critical current density at 4.2 K shows a microstructure (in transverse cross-section) with strongly folded and curled of α-Ti pinning centers dispersed within the superconducting β-NbTi matrix. It is believed that the higher temperature is beneficial to a higher 4.2 K J_c values, but these J_c values slightly decrease with increasing heat treatment durations.

源语言	英语
页（从-至）	1840-1842
页数	3
期刊	Physica C: Superconductivity and its Applications
卷	468
期	15-20
DOI	https://doi.org/10.1016/j.physc.2008.05.096
出版状态	已出版 - 15 9月 2008

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title = "The microstructure of NbTi superconducting composite wire for ITER project",

abstract = "This paper presents early results of the R&D programme carried out to optimize NbTi wires for the ITER poloidal field coils (PF). Using TEM, the influence of treatment conditions on the microstructure was investigated. The purpose is to find relations between the alloy microstructure and the NbTi wire critical current densities at 4.2 K. Typical NbTi with high critical current density at 4.2 K shows a microstructure (in transverse cross-section) with strongly folded and curled of α-Ti pinning centers dispersed within the superconducting β-NbTi matrix. It is believed that the higher temperature is beneficial to a higher 4.2 K Jc values, but these Jc values slightly decrease with increasing heat treatment durations.",

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

author = "Li, {J. F.} and Zhang, {P. X.} and Liu, {X. H.} and Li, {J. S.} and Y. Feng and Du, {S. J.} and Wang, {T. C.} and Liu, {W. T.} and G. Grunblatt and C. Verwaerde and Hoang, {G. K.}",

year = "2008",

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doi = "10.1016/j.physc.2008.05.096",

language = "英语",

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T1 - The microstructure of NbTi superconducting composite wire for ITER project

AU - Li, J. F.

AU - Zhang, P. X.

AU - Liu, X. H.

AU - Li, J. S.

AU - Feng, Y.

AU - Du, S. J.

AU - Wang, T. C.

AU - Liu, W. T.

AU - Grunblatt, G.

AU - Verwaerde, C.

AU - Hoang, G. K.

PY - 2008/9/15

Y1 - 2008/9/15

N2 - This paper presents early results of the R&D programme carried out to optimize NbTi wires for the ITER poloidal field coils (PF). Using TEM, the influence of treatment conditions on the microstructure was investigated. The purpose is to find relations between the alloy microstructure and the NbTi wire critical current densities at 4.2 K. Typical NbTi with high critical current density at 4.2 K shows a microstructure (in transverse cross-section) with strongly folded and curled of α-Ti pinning centers dispersed within the superconducting β-NbTi matrix. It is believed that the higher temperature is beneficial to a higher 4.2 K Jc values, but these Jc values slightly decrease with increasing heat treatment durations.

AB - This paper presents early results of the R&D programme carried out to optimize NbTi wires for the ITER poloidal field coils (PF). Using TEM, the influence of treatment conditions on the microstructure was investigated. The purpose is to find relations between the alloy microstructure and the NbTi wire critical current densities at 4.2 K. Typical NbTi with high critical current density at 4.2 K shows a microstructure (in transverse cross-section) with strongly folded and curled of α-Ti pinning centers dispersed within the superconducting β-NbTi matrix. It is believed that the higher temperature is beneficial to a higher 4.2 K Jc values, but these Jc values slightly decrease with increasing heat treatment durations.

KW - Critical current density

KW - ITER

KW - Microstructure

KW - NbTi superconducting wire

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SN - 0921-4534

VL - 468

SP - 1840

EP - 1842

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 15-20

ER -

The microstructure of NbTi superconducting composite wire for ITER project

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