发明名称 |
Verfahren zur Herstellung eines Nb¶3¶Al-supraleitenden Mehrfaserdrahtes |
摘要 |
This invention provides a production method of Nb3Al superconducting multifilamentary wire based on rapid-heating, quenching and transformation method, capable of producing a high-performance Nb3Al superconducting multifilamentary wire by improving critical temperature thereof, upper critical field and critical current density. Upon a first stage heat treatment of beating a composite, in which bcc phase Nb-Al supersaturated solid solution is dispersed in Nb matrix, the bcc phase Nb-Al supersaturated solid solution ordered in temperature rise process is made disordered at an initial phase thereof and a non-reacting portion located adjacent is heated using a reaction heat generated when transforming this disordered bcc phase to A15 phase. Then, disordering of the bcc phase is promoted while propagating a high-temperature transformation region so as to automatically progress high-temperature beat treatment. As a result, a reaction-transformation is caused to block stacking fault from being generated in the A15 phase and crystal grain from being coarse and then, a second stage heat treatment for improving a long range ordering of the A15 phase is carried out. |
申请公布号 |
DE10125929(B4) |
申请公布日期 |
2006.04.13 |
申请号 |
DE2001125929 |
申请日期 |
2001.05.28 |
申请人 |
NATIONAL INSTITUTE FOR MATERIALS SCIENCE, TSUKUBA |
发明人 |
TAKEUCHI, TAKAO;BANNO, NOBUYA;ASANO, TOSHIHISA;WADA, HITOSHI |
分类号 |
H01B12/10;H01B13/00;C30B25/10;C30B33/00;H01L39/24 |
主分类号 |
H01B12/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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