Please use this identifier to cite or link to this item: http://dlib.scu.ac.ir/handle/Hannan/185050
Title: Study and Manufacture of Nb3Sn Strands by Bronze Route
Authors: Ke Zhang;Pingxiang Zhang;Jianhua Guo;Jingjing Jia;Yigong Shi;Jianwei Liu;Huixian Gao;Jianfeng Li;Xianghong Liu;Yong Feng
subject: microstructure|bronze processed|hysteresis loss|Nb3Sn strand|critical current density
Year: 2016
Publisher: IEEE
Abstract: Three kinds of Nb3Sn strands with different designs were made by bronze route. Studies were carried out on bronzeto-NbTa-volume ratio, filament diameter, annealing, hot isostatic pressure process, diffusion barrier, and heat treatment. It is important for strand designs to achieve a good performance. Moreover, bronze-to-NbTa-volume ratios of 2.4 and 2.8 were applied in the strand designs. Strands with lower bronze ratio means that more Nb3Sn layer fraction formed, while, at the same time, it is provided with a high critical current density (J<sub>c</sub>). J<sub>c</sub> increases with the reduction of filament diameter, when there is the same bronze ratio. In addition, Nb and Ta were used as diffusion barrier materials. A strand that used Nb barrier has several times hysteresis loss to a strand that used Ta barrier. When it comes to the intermediate processes, such as annealing and hot isostatic pressure, they could affect the homogeneous deformation and properties of strands. It is important to keep a low annealing temperature to realize a high J<sub>c</sub> and n-value. As for the hot isostatic pressure process, it is helpful for uniform cross section. Furthermore, different heat treatments were also carried out, while analysis was also conducted on the microstructure.microstructure.
URI: http://localhost/handle/Hannan/185050
ISSN: 1051-8223
1558-2515
volume: 26
issue: 3
More Information: 1
4
Appears in Collections:2016

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Title: Study and Manufacture of Nb3Sn Strands by Bronze Route
Authors: Ke Zhang;Pingxiang Zhang;Jianhua Guo;Jingjing Jia;Yigong Shi;Jianwei Liu;Huixian Gao;Jianfeng Li;Xianghong Liu;Yong Feng
subject: microstructure|bronze processed|hysteresis loss|Nb3Sn strand|critical current density
Year: 2016
Publisher: IEEE
Abstract: Three kinds of Nb3Sn strands with different designs were made by bronze route. Studies were carried out on bronzeto-NbTa-volume ratio, filament diameter, annealing, hot isostatic pressure process, diffusion barrier, and heat treatment. It is important for strand designs to achieve a good performance. Moreover, bronze-to-NbTa-volume ratios of 2.4 and 2.8 were applied in the strand designs. Strands with lower bronze ratio means that more Nb3Sn layer fraction formed, while, at the same time, it is provided with a high critical current density (J<sub>c</sub>). J<sub>c</sub> increases with the reduction of filament diameter, when there is the same bronze ratio. In addition, Nb and Ta were used as diffusion barrier materials. A strand that used Nb barrier has several times hysteresis loss to a strand that used Ta barrier. When it comes to the intermediate processes, such as annealing and hot isostatic pressure, they could affect the homogeneous deformation and properties of strands. It is important to keep a low annealing temperature to realize a high J<sub>c</sub> and n-value. As for the hot isostatic pressure process, it is helpful for uniform cross section. Furthermore, different heat treatments were also carried out, while analysis was also conducted on the microstructure.microstructure.
URI: http://localhost/handle/Hannan/185050
ISSN: 1051-8223
1558-2515
volume: 26
issue: 3
More Information: 1
4
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7410003.pdf796.1 kBAdobe PDFThumbnail
Preview File
Title: Study and Manufacture of Nb3Sn Strands by Bronze Route
Authors: Ke Zhang;Pingxiang Zhang;Jianhua Guo;Jingjing Jia;Yigong Shi;Jianwei Liu;Huixian Gao;Jianfeng Li;Xianghong Liu;Yong Feng
subject: microstructure|bronze processed|hysteresis loss|Nb3Sn strand|critical current density
Year: 2016
Publisher: IEEE
Abstract: Three kinds of Nb3Sn strands with different designs were made by bronze route. Studies were carried out on bronzeto-NbTa-volume ratio, filament diameter, annealing, hot isostatic pressure process, diffusion barrier, and heat treatment. It is important for strand designs to achieve a good performance. Moreover, bronze-to-NbTa-volume ratios of 2.4 and 2.8 were applied in the strand designs. Strands with lower bronze ratio means that more Nb3Sn layer fraction formed, while, at the same time, it is provided with a high critical current density (J<sub>c</sub>). J<sub>c</sub> increases with the reduction of filament diameter, when there is the same bronze ratio. In addition, Nb and Ta were used as diffusion barrier materials. A strand that used Nb barrier has several times hysteresis loss to a strand that used Ta barrier. When it comes to the intermediate processes, such as annealing and hot isostatic pressure, they could affect the homogeneous deformation and properties of strands. It is important to keep a low annealing temperature to realize a high J<sub>c</sub> and n-value. As for the hot isostatic pressure process, it is helpful for uniform cross section. Furthermore, different heat treatments were also carried out, while analysis was also conducted on the microstructure.microstructure.
URI: http://localhost/handle/Hannan/185050
ISSN: 1051-8223
1558-2515
volume: 26
issue: 3
More Information: 1
4
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7410003.pdf796.1 kBAdobe PDFThumbnail
Preview File