Abstract
In order to realize a react and wind (R&W) method for Nb3Sn wires, the influences of a bending load at room temperature are investigated. Usually, the superconducting wires undergo bending loads at room temperature repeatedly during winding and insulation processes. We define these bending loads as 'pre-bending' treatments. We applied the pre-bending strain of 0 and 0.5% to the highly strengthened CuNb/(Nb, Ti)3Sn wires, and measured the stress/strain properties and critical currents. The improvements of stress dependence of normalized critical current and the increase of the maximum critical current by the pre-bending treatments were found. The model based on the distribution of the local tensile strain as a bending strain describes the experimental results well without the increase of the maximum critical current. When the pre-bending strain was applied, the calculated results indicate that the mechanical properties are improved due to the local work hardening, and hence the stress dependence of Ic increases.
Original language | English |
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Pages (from-to) | 1059-1063 |
Number of pages | 5 |
Journal | Superconductor Science and Technology |
Volume | 16 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2003 Sep 1 |
Event | MEMO 3: Second International Workshop on Mechano-Electromagetic Properties of Composite Superconductors - Kyoto, Japan Duration: 2003 Mar 3 → 2003 Mar 5 |
ASJC Scopus subject areas
- Ceramics and Composites
- Condensed Matter Physics
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry