ITER niobium-tin strands reacted under model coil heat-treatment conditions
| Autor: | R.N. Randall, Joseph Minervini, Makoto Takayasu, R. Childs, R. J. Jayakumar |
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| Rok vydání: | 1999 |
| Předmět: |
Fabrication
Materials science Solenoid Superconducting magnet Fusion power Condensed Matter Physics Electronic Optical and Magnetic Materials Stress (mechanics) chemistry.chemical_compound Nuclear magnetic resonance chemistry Electromagnetic coil Electrical and Electronic Engineering Composite material Niobium-tin Incoloy |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 9:644-647 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.783378 |
| Popis: | Heat-treatment conditions were studied for ITER Central Solenoid model coils wound with Nb/sub 3/Sn cables jacketed in Incoloy-908 conduits. The heat treatments recommended by the strand manufacturers had to be modified to meet various requirements for the large coils and to prevent Stress Accelerated Grain Boundary Oxidation (SAGBO) of Incoloy 908. Single-strand tests of ITER wires produced by Vacuumschmelze, IGC, Furukawa and Mitsubishi were carried out prior to the model coil heat treatments to verify the heat-treatment conditions. The modified heat treatments improved the performance of all four wires. Especially, critical currents of Furukawa wire were improved significantly. Test results of the witness samples co-reacted with ITER CS coils indicate that the heat treatments of all 10 layers of the inner module were successfully completed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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