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Manufacture and evaluation of Nb/sub 3/Sn conductors fabricated by the MJR method

Description: The bronze matrix/niobium filament process has become established as a commercially viable method for producing multifilamentary Nb/sub 3/Sn superconductors. This paper describes a new method, the Modified Jelly-Roll (MJR) approach, which can produce a structure similar to that in a conventionally fabricated multifilamentary Nb/sub 3/Sn conductor. This approach utilizes alternate sheets of niobium expanded metal and bronze, which are rolled into a jelly-roll configuration and then extruded. Dur… more
Date: November 23, 1982
Creator: McDonald, W. K.; Curtis, C. W.; Scanlan, R. M.; Larbalestier, D. C.; Marken, K. & Smathers, D. B.
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Partner: UNT Libraries Government Documents Department
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Fabrication of superconductors. [NbTi in Cu, CuNi matrix]

Description: The paper discusses the development of a process for making high performance, fine-filament superconducting wires, utilizing dual matrix stabilization and Nb/sub 46/Ti superconducting filaments. Minimum filament size-achieved was 8 ..mu..m using OFHC copper and Cu/sub 30/Ni matrix materials. Ductility of the NbTi starting material was found to exert a major influence on the properties of the finished wire, and specifications for acceptable NbTi were developed. When specific impurity levels are … more
Date: January 1, 1976
Creator: Turner, W. C.; Lundberg, L. B.; Zeitlin, B.; deWinter, T. A. & McDonald, W. K.
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Partner: UNT Libraries Government Documents Department
open access

Results of the Fermilab wire production program

Description: In examining the various schedules of wire drawing and heat treating, the Critchlow type of schedule provided the highest and most uniform data from billet to billet. It consists of a long anneal at 400 +- 20/sup 0/C at a cold work point giving about 99 percent reduction in area from the extrusion size. Several quick copper anneals at 300/sup 0/C may be interspersed to aid in fabrication. A final anneal at finished size both peaks up the resistivity ratio of the copper as well as the critical c… more
Date: January 1, 1976
Creator: Strauss, B. P.; Remsbottom, R. H.; Reardon, P. J.; Curtis, C. W. & McDonald, W. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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