Tensile properties of bcc Nb–Al supersaturated solid solution embedded in a Nb matrix to be transformed to A15-type Nb3Al filaments
作者： T Takeuchi , M Kosuge , N Banno , A Kikuchi , Y Iijima
DOI: 10.1088/0953-2048/18/7/010
关键词: Annealing (metallurgy) 、 Superconductivity 、 Electromagnetic coil 、 Ultimate tensile strength 、 Composite material 、 Magnetic field 、 Elongation 、 Conductor 、 Electrical conductor 、 Materials science
摘要: The mechanical Cu-cladding method is favourable to incorporate stabilizer into the rapid-heating, quenching and transformation (RHQT) processed Nb3Al conductor for NMR insert coil uses, because an appropriate deformation of bcc Nb?Al supersaturated solid solution (Nb(Al)ss) effective in transforming it a short time, making resultant superconducting properties large insensitive temperature ramp rate during annealing. In order examine drawability Cu-clad stabilized with rectangular dies that might be finishing precision dimension, which would eventually key homogenizing magnetic field magnet, tensile loading test at room was performed conductors. For comparison, as-quenched wires round-to-round deformed bare were also examined. A fracture elongation reached as much 11% Nb/Nb(Al)ss composites, but only 3.5% Effects pre-annealing on studied. Ductility does not seem deteriorate after temperatures less than 500??C, 600??C apparently reduces elongation. Pre-annealing did improve dies.
harvard.edu
sci-hub.se 参考文章(15)
Alan Cottrell, An introduction to metallurgy ,(1967)
T. Takeuchi, N. Banno, K. Tagawa, T. Kobayashi, K. Tsuchiya, N. Tatsumi, H. Kitaguchi, T. Fukuzaki, M. Kosuge, H. Wada, Y. Iijima, A. Kikuchi, K. Inoue, Microstructure and n-value of RHQT processed Nb/sub 3/Al superconductors for NMR uses IEEE Transactions on Applied Superconductivity. ,vol. 14, pp. 961- 966 ,(2004) , 10.1109/TASC.2004.830339
T Takeuchi, K Tagawa, N Banno, M Kosuge, M Yuyama, H Wada, A Kikuchi, Y Iijima, K Inoue, Development of internally stabilized RHQT Nb3Al superconductors Superconductor Science and Technology. ,vol. 16, pp. 1173- 1181 ,(2003) , 10.1088/0953-2048/16/10/309
T. Takeuchi, Nb/sub 3/Al superconductors IEEE Transactions on Applied Superconductivity. ,vol. 12, pp. 1088- 1093 ,(2002) , 10.1109/TASC.2002.1018590
T Takeuchi, N Banno, T Fukuzaki, H Wada, Large improvement in high-field critical current densities of Nb3Al conductors by the transformation-heat-based up-quenching method Superconductor Science and Technology. ,vol. 13, ,(2000) , 10.1088/0953-2048/13/10/101
T Fukuzaki, T Takeuchi, N Banno, K Tagawa, N Tatsumi, H Ogiwara, H Wada, Effect of rapid heating, quenching and transformation conditions on the superconducting properties and microstructure of Jelly-Roll processed Nb3Al superconductors Superconductor Science and Technology. ,vol. 15, pp. 1404- 1409 ,(2002) , 10.1088/0953-2048/15/10/307
Takao Takeuchi, Nb3Al conductors for high-field applications Superconductor Science and Technology. ,vol. 13, pp. R101- R119 ,(2000) , 10.1088/0953-2048/13/9/201
A. Kikuchi, Y. Iijima, K. Inoue, Microstructures and superconducting properties of transformed Nb3Al wire Physica C-superconductivity and Its Applications. ,vol. 372, pp. 1307- 1310 ,(2002) , 10.1016/S0921-4534(02)01016-X
R. Ciardella, M. Dariel, J.L.-F. Wang, M. Pickus, A quench-age method for the fabrication of Nb(Al) superconductors IEEE Transactions on Magnetics. ,vol. 13, pp. 832- 833 ,(1977) , 10.1109/TMAG.1977.1059380
P.J. Lee, A.A. Squitieri, D.C. Larbalestier, T. Takeuchi, N. Banno, T. Fukuzaki, H. Wada, Microchemical and microstructural comparison of high performance Nb/sub 3/Al composites IEEE Transactions on Applied Superconductivity. ,vol. 13, pp. 3398- 3401 ,(2003) , 10.1109/TASC.2003.812334