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
UR - http://www.scopus.com/inward/record.url?scp=0348191105&partnerID=8YFLogxK
M3 - 文章
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 -