Effect of Preheat Treatment on the Critical Current Density in Nb46. 5Ti/Cu Composites

Xianghong Liu; Lian Zhou; Xiaozu Wu; Nong Zhou; Pingxiang Zhang; Yong Feng

Effect of Preheat Treatment on the Critical Current Density in Nb46. 5Ti/Cu Composites

Xianghong Liu, Lian Zhou, Xiaozu Wu, Nong Zhou, Pingxiang Zhang, Yong Feng

Northwest Institute for Nonferrous Metal Research

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

Abstract

High homogenous and low-impurity content Nb46. 5Ti ingots were used to study the effect of heat treatment on the critical current densities in Nb46. 5Ti/Cu multifilamentary composites. The results show that low temperature preheat treatment is beneficial to refining and dispersing the α-Ti precipitates in NbTi superconductors. The more cycles of heat treatment, the better effect and the larger density of α-Ti preciptites. Finally, the J_c in Nb46. 5Ti superconductors has been improved. Moreover, the final strian of Nb46. 5Ti/Cu multifilamentary composites can be reduced when preheat treatment is used, which is very important to the commercial manufacture of NbTi/Cu of multifilamentary composites. The highest J_c reaches 3 500A/m² (4. 2 K, 5 T), and 1 740A/m² (4. 2 K, 8 T) for the preheat treated Nb46. 5Ti/Cu composites.

Original language	English
Pages (from-to)	121-124
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	29
Issue number	2
State	Published - Apr 2000
Externally published	Yes

Keywords

Critical current density
Nb46. 5Ti composite
Preheat treatment

Cite this

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title = "Effect of Preheat Treatment on the Critical Current Density in Nb46. 5Ti/Cu Composites",

abstract = "High homogenous and low-impurity content Nb46. 5Ti ingots were used to study the effect of heat treatment on the critical current densities in Nb46. 5Ti/Cu multifilamentary composites. The results show that low temperature preheat treatment is beneficial to refining and dispersing the α-Ti precipitates in NbTi superconductors. The more cycles of heat treatment, the better effect and the larger density of α-Ti preciptites. Finally, the Jc in Nb46. 5Ti superconductors has been improved. Moreover, the final strian of Nb46. 5Ti/Cu multifilamentary composites can be reduced when preheat treatment is used, which is very important to the commercial manufacture of NbTi/Cu of multifilamentary composites. The highest Jc reaches 3 500A/m2 (4. 2 K, 5 T), and 1 740A/m2 (4. 2 K, 8 T) for the preheat treated Nb46. 5Ti/Cu composites.",

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author = "Xianghong Liu and Lian Zhou and Xiaozu Wu and Nong Zhou and Pingxiang Zhang and Yong Feng",

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language = "英语",

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journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Effect of Preheat Treatment on the Critical Current Density in Nb46. 5Ti/Cu Composites

AU - Liu, Xianghong

AU - Zhou, Lian

AU - Wu, Xiaozu

AU - Zhou, Nong

AU - Zhang, Pingxiang

AU - Feng, Yong

PY - 2000/4

Y1 - 2000/4

N2 - High homogenous and low-impurity content Nb46. 5Ti ingots were used to study the effect of heat treatment on the critical current densities in Nb46. 5Ti/Cu multifilamentary composites. The results show that low temperature preheat treatment is beneficial to refining and dispersing the α-Ti precipitates in NbTi superconductors. The more cycles of heat treatment, the better effect and the larger density of α-Ti preciptites. Finally, the Jc in Nb46. 5Ti superconductors has been improved. Moreover, the final strian of Nb46. 5Ti/Cu multifilamentary composites can be reduced when preheat treatment is used, which is very important to the commercial manufacture of NbTi/Cu of multifilamentary composites. The highest Jc reaches 3 500A/m2 (4. 2 K, 5 T), and 1 740A/m2 (4. 2 K, 8 T) for the preheat treated Nb46. 5Ti/Cu composites.

AB - High homogenous and low-impurity content Nb46. 5Ti ingots were used to study the effect of heat treatment on the critical current densities in Nb46. 5Ti/Cu multifilamentary composites. The results show that low temperature preheat treatment is beneficial to refining and dispersing the α-Ti precipitates in NbTi superconductors. The more cycles of heat treatment, the better effect and the larger density of α-Ti preciptites. Finally, the Jc in Nb46. 5Ti superconductors has been improved. Moreover, the final strian of Nb46. 5Ti/Cu multifilamentary composites can be reduced when preheat treatment is used, which is very important to the commercial manufacture of NbTi/Cu of multifilamentary composites. The highest Jc reaches 3 500A/m2 (4. 2 K, 5 T), and 1 740A/m2 (4. 2 K, 8 T) for the preheat treated Nb46. 5Ti/Cu composites.

KW - Critical current density

KW - Nb46. 5Ti composite

KW - Preheat treatment

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AN - SCOPUS:0348191105

SN - 1002-185X

VL - 29

SP - 121

EP - 124

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 -

Effect of Preheat Treatment on the Critical Current Density in Nb46. 5Ti/Cu Composites

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Keywords

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