Effects of bending on cracking and critical current of Nb sub(3)Sn ITER wires

Effects of bending on cracking and critical current of Nb sub(3)Sn ITER wires

Critical current (I sub(c)) measurements and microscopic crack investigations were performed on short samples of ITER (International Thermonuclear Experimental Reactor) wires, designed for the CSMC (Central Solenoid Model Coil), that were bent to curvatures ranging up to 0.3% at room temperature. I...

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Veröffentlicht in:IEEE transactions on applied superconductivity 2005-01, Vol.15 (2)
Hauptverfasser: Senkowicz, B J, Takayasu, M, Lee, P J, Minervini, J V, Larbalestier, D C
Format: Artikel
Sprache:eng
Schlagworte:
Bending
Critical current (superconductivity)
Curvature
Fracture mechanics
Mathematical analysis
Solenoids
Superconductivity
Wire
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Zusammenfassung:Critical current (I sub(c)) measurements and microscopic crack investigations were performed on short samples of ITER (International Thermonuclear Experimental Reactor) wires, designed for the CSMC (Central Solenoid Model Coil), that were bent to curvatures ranging up to 0.3% at room temperature. I sub(c) was found to improve significantly with bending. Microstructural investigation revealed that IGC and VAC samples were nearly crack-free at all bend strains while Furukawa samples had significant cracking due to polishing and unrelated to bending.
ISSN:1051-8223
DOI:10.1109/TASC.2005.849061