TY - JOUR
T1 - Characterization of electromechanical properties in differently sheathed MgB 2 wires under uniaxial tension
AU - Shin, Hyung Seop
AU - Diaz, Mark A.
AU - Bautista, Zhierwinjay
AU - Oguro, Hidetoshi
AU - Awaji, Satoshi
N1 - Funding Information:
Manuscript received October 27, 2018; accepted January 14, 2019. Date of publication January 30, 2019; date of current version February 20, 2019. This work was supported in part by a grant from the National Research Foundation of Korea (NRF-2017-001901) funded by the Ministry of Science and ICT, Republic of Korea and in part by the Korea Electric Power Corporation under Grant R18XA03. (Corresponding author: Hyung-Seop Shin.) H.-S. Shin, M. A. Diaz, and Z. Bautista are with the Department of Mechanical Design Engineering, Andong National University, Andong 36729, South Korea (e-mail:, hsshin@anu.ac.kr; kram09.mad@gmail.com; jhayebautista0612@ymail.com).
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - In this study, the electromechanical properties of the differently sheathed 18 module MgB 2 wires were evaluated under uniaxial tensile loading at 20 K and 2 T. Four kinds of 18 module MgB 2 wire samples with different configurations were used. They have Cu sheath/Nb barrier/MgB 2 filament structure with different ratio of non-SC/SC or different sheath materials. The mechanical and electromechanical properties of the MgB 2 wires at 20 K and 2 T were examined using the Katagiri-type test probe. At 20 K, as the applied magnetic field increased, all MgB 2 samples showed a significant I c degradation but the same I c (B) dependence was observed regardless of the sheath configuration. Monel sheathed sample 4 exhibited the highest yield strength and elastic modulus, σ y = 634 MPa and E = 178 GPa at 20 K, respectively. Both samples 2 and 3 which had a lower non-SC/SC ratio by additional etching process exhibited a higher irreversible strain limit ϵ irr = 0.30%.
AB - In this study, the electromechanical properties of the differently sheathed 18 module MgB 2 wires were evaluated under uniaxial tensile loading at 20 K and 2 T. Four kinds of 18 module MgB 2 wire samples with different configurations were used. They have Cu sheath/Nb barrier/MgB 2 filament structure with different ratio of non-SC/SC or different sheath materials. The mechanical and electromechanical properties of the MgB 2 wires at 20 K and 2 T were examined using the Katagiri-type test probe. At 20 K, as the applied magnetic field increased, all MgB 2 samples showed a significant I c degradation but the same I c (B) dependence was observed regardless of the sheath configuration. Monel sheathed sample 4 exhibited the highest yield strength and elastic modulus, σ y = 634 MPa and E = 178 GPa at 20 K, respectively. Both samples 2 and 3 which had a lower non-SC/SC ratio by additional etching process exhibited a higher irreversible strain limit ϵ irr = 0.30%.
KW - Electromechanical property
KW - MgB2 wires
KW - sheath configuration
KW - sheath material
UR - http://www.scopus.com/inward/record.url?scp=85062266924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062266924&partnerID=8YFLogxK
U2 - 10.1109/TASC.2019.2896476
DO - 10.1109/TASC.2019.2896476
M3 - Article
AN - SCOPUS:85062266924
VL - 29
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 5
M1 - 8630055
ER -