Publikation: Mechanical Properties and Strain-Induced Filament Degradation of Ex Situ and In Situ MgB2 Wires
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2016
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Alknes, Patrick
Bjoerstad, Roger
Scheuerlein, Christian
Bordini, Bernardo
Sugano, Michinaka
Hudspeth, Jessica
Ballarino, Amalia
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IEEE Transactions on Applied Superconductivity. 2016, 26(3), 8401205. ISSN 1051-8223. eISSN 1558-2515. Available under: doi: 10.1109/TASC.2015.2509166
Zusammenfassung
We have compared the mechanical properties and the degradation of the critical current after uniaxial tensile loading at room temperature (RT) and at 77 K of ex situ and in situ MgB2 wires. The strain that the wires can withstand without degradation is at 77 K substantially higher than at RT. In order to explain the mechanical behavior of the wires, the lattice distortions of the different wire constituents and their texture have been measured simultaneously with the composite wire stress and strain in a high-energy synchrotron beamline. The different MgB2 microstructure in both wire types is revealed in filament cross sections prepared by the focused-ion-beam technique and in fracture surfaces.
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ALKNES, Patrick, Matthias HAGNER, Roger BJOERSTAD, Christian SCHEUERLEIN, Bernardo BORDINI, Michinaka SUGANO, Jessica HUDSPETH, Amalia BALLARINO, 2016. Mechanical Properties and Strain-Induced Filament Degradation of Ex Situ and In Situ MgB2 Wires. In: IEEE Transactions on Applied Superconductivity. 2016, 26(3), 8401205. ISSN 1051-8223. eISSN 1558-2515. Available under: doi: 10.1109/TASC.2015.2509166BibTex
@article{Alknes2016-04Mecha-34151,
year={2016},
doi={10.1109/TASC.2015.2509166},
title={Mechanical Properties and Strain-Induced Filament Degradation of Ex Situ and In Situ MgB<sub>2</sub> Wires},
number={3},
volume={26},
issn={1051-8223},
journal={IEEE Transactions on Applied Superconductivity},
author={Alknes, Patrick and Hagner, Matthias and Bjoerstad, Roger and Scheuerlein, Christian and Bordini, Bernardo and Sugano, Michinaka and Hudspeth, Jessica and Ballarino, Amalia},
note={Article Number: 8401205}
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