Analysis of Nb3Sn Strand Microstructure After Full-size SULTAN Test of ITER TF Conductor Sample

Autor: K. Shutov, V.S. Vysotsky, V. Tronza, A. Mitin, I. Abdyukhanov, M. Alekseev, D. Kaverin, L. Potanina
Rok vydání: 2015
Předmět:
Zdroj: Physics Procedia. 67:914-919
ISSN: 1875-3892
Popis: The study of defects generated in superconducting filaments of Nb 3 Sn strands under electromagnetic and thermal cycling was carried out for the TFRF3 cable-in-conduit-conductor (CICC) sample that passed final testing inthe SULTAN test facility. The TFRF3 sample was manufactured forthe qualification of the RF Toroidal Field (TF) CICC. The strand samples were taken from different locations in the cross–section of TFRF3 and different positions along its axis in relation to background magnetic field. Qualitative and quantitative analysis of defects were carried out using metallographic analysis of images obtained by Laser Scanning Microscope. We analyzed number, type, and distribution of defects in filaments of the Nb 3 Sn strand samples extracted from different petals of TFRF3 in dependence on thestrand location in the cross–section (the center of petal, nearby the spiral, nearby the outer jacket) in the high field zone (HFZ). The results about the defects amount and their distribution are presented and discussed.
Databáze: OpenAIRE