Investigation of structure and properties of the Nb rods manufactured by different deformation and heat treatment regimes in mass production conditions for the Nb{sub 3}Sn strands

Journal Article · Mon Jan 27 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4860623· OSTI ID:22264039

Abdyukhanov, I. M.; Vorobieva, A. E.; Alekseev, M. V.; Mareev, K. A.; Dergunova, E. A.; Peredkova, T. N. ^[1]; Shikov, A. K. ^[2]; Utkin, K. V.; Vorobieva, A. V.; Kharkovsky, D. N. ^[3]

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1. JSC Bochvar High-Technology Research Institute of Inorganic Materials, 5a Rogova St., Moscow, 123060 (Russian Federation)
2. NRC Kurchatov Institute, 1 Akademika Kurchatova Sq., Moscow, 123182 (Russian Federation)
3. JSC Chepetsky Mechanical Plant, 7 Belova St., Glazov, 427620 (Russian Federation)

From 2009 the mass production of the Nb{sub 3}Sn strands for ITER with the yield of several tens of tons per year operates at JSC Chepetsky Mechanical Plant (Glazov, Russia). In order to enhance the stability of output characteristics of the produced Nb{sub 3}Sn strands, to increase the Nb filaments dimensional homogeneity the manufacture regimes improvement of the used semiproducts such as Nb rods intended for the superconducting filaments formation in the finished strands has been carried out. In the work the investigations of the Nb rheological behavior, the influence of heat treatment in the wide temperature range from 700 to 1300 °C on the predeformed Nb rods structure and mechanical properties have been performed. Different production routes of the Nb rods, including such operations like forging, extrusion and drawing combined with the recrystallization annealings, were used. Composite Nb{sub 3}Sn strands have been produced and their electrophysical properties have been tested. For the first time influence of the niobium rods manufacture regimes on the current carrying capacity of the industrial Nb{sub 3}Sn strands has been investigated.

• OSTI ID: 22264039
• Journal Information: AIP Conference Proceedings, Vol. 1574, Issue 1; Conference: International cryogenic materials conference, Anchorage, AK (United States), 17-21 Jun 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ANNEALING
DEFORMATION
FILAMENTS
ITER TOKAMAK
MECHANICAL PROPERTIES
NIOBIUM
RECRYSTALLIZATION
TEMPERATURE RANGE