Mechanical properties of MgB<sub>2</sub>superconducting wires fabricated by internal Mg diffusion process

Abstract

Mechanical properties of MgB2 monocore superconducting wires fabricated by an internal Mg diffusion (IMD) process and a powder-in-tube (PIT) process were investigated. The uniaxial tensile strain dependence of critical current (Ic) and the transverse compressive stress dependence of Ic were investigated at 4.2 K, 10 T. The IMD-processed MgB2 wire showed a large irreversibility tensile strain limit (irr = 0.67%) and transverse compressive stress tolerance of 206 MPa, whereas the PIT-processed wire had 0.51% and 160 MPa. Furthermore, the tensile strain sensitivity of Ic for the IMD-MgB2 wire was smaller than that for the PIT-MgB2 wire. Consequently, mechanical properties of IMD-processed MgB2 superconducting wires are better than those of PIT-processed wires.

References

Page 1

	Year	Citations
Superconducting properties of MgB2 bulk materials prepared by high-pressure sintering Yoshihiko Takano, Hiroyuki Takeya, H. Fujii, Applied Physics Letters High-pressure SinteringMagnetic PropertiesSuperconducting MaterialEngineeringOnset Temperature	2001	351
High performance new MgB<sub>2</sub>superconducting hollow wires Superconductor Science and Technology	2003	162
Effect of transverse compressive stress on the critical current and upper critical field of Nb3Sn J. W. Ekin Journal of Applied Physics Superconducting MaterialEngineeringLarge MagnetsTransverse Compressive StressLarge Reversible Degradation	1987	143
Microstructures and critical currents of single- and multi-filamentary MgB<sub>2</sub>superconducting wires fabricated by an internal Mg diffusion process K. Togano, J M Hur, A. Matsumoto, Superconductor Science and Technology Superconducting MaterialEngineeringStructural MaterialsCritical CurrentsSingle-filament Wire	2010	60
Strain effect in MgB2/stainless steel superconducting tape Physica C Superconductivity Materials ScienceSuperconducting MaterialHigh-tc SuperconductivityEngineeringSuperconductivity	2001	51
Superconducting and mechanical performance and the strain effects of a multifilamentary MgB<sub>2</sub>/Ni tape Hitoshi Kitaguchi, Hiroaki Kumakura Superconductor Science and Technology Superconducting MaterialMagnetic PropertiesEngineeringSevere Plastic DeformationMechanical Engineering	2005	48
Scaling the reversible strain response of MgB<sub>2</sub>conductors M. Dhallé, H. van Weeren, S. Wessel, Superconductor Science and Technology Materials ScienceMagnetismStrain DependenceEngineeringHigh-tc Superconductivity	2005	36
Stress–strain effects on powder-in-tube MgB<sub>2</sub>tapes and wires Kazumune KATAGIRI, Ryuya Takaya, Koichi KASABA, Superconductor Science and Technology EngineeringSevere Plastic DeformationMechanical EngineeringStress–strain EffectsStructural Materials	2005	36
Superconducting Properties of Diffusion-Processed Multifilamentary ${\rm MgB}_{2}$ Wires Hiroaki Kumakura, J M Hur, K. Togano, IEEE Transactions on Applied Superconductivity Superconducting MaterialEngineeringStructural MaterialsSuperconductivitySuperconducting Devices	2011	33
Enhancement of the critical current density of internal Mg diffusion processed MgB2 wires by the addition of both SiC and liquid aromatic hydrocarbon Shujun Ye, A. Matsumoto, K. Togano, Physica C Superconductivity Materials EngineeringMaterials ScienceElectrical EngineeringEngineeringCritical Current Density	2011	33

Page 1