Strain influence on Jc behavior of Nb3Sn multifilamentary strands fabricated by internal tin process for ITER

Zhang, P.X.; Liang, Ming; Tang, X.D.; Li, C.G.; Xiao, Caiqin; Zhang, K.; Zhou, Lian; Wu, Yezhou; Peide, Weng; Lu, Yafeng

doi:10.1016/j.physc.2008.05.097

Cited by 8 publications

(5 citation statements)

References 16 publications

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“…Due to their high current density and zero direct current resistivity, superconductors are the enabling component of powerful and efficient magnets for accelerators, nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI) and fusion reactors. As the superconductors' current carrying capabilities are not only influenced by the magnetic field and the operating temperature but also by the mechanical strain [1][2][3], management of the electromagnetic forces is critical. Especially rare-earth-barium-copper-oxide (REBCO) coated conductors are further pushing the boundaries of superconductivity towards devices with unparalleled magnetic fields and operating current densities.…”

Section: Introductionmentioning

confidence: 99%

Electro-mechanical properties of REBCO coated conductors from various industrial manufacturers at 77 K, self-field and 4.2 K, 19 T

Barth

Mondonico

Senatore

2015

Supercond. Sci. Technol.

197

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Abstract. Rare-earth-barium-copper-oxide (REBCO) tapes are now available from several industrial manufacturers and are very promising conductors in high field applications. Due to diverging materials and deposition processes, these manufacturers' tapes can be expected to differ in their electro-mechanical and mechanical properties. For magnets designers, these are together with the conductors' in-field critical current performance of the highest importance in choosing a suitable conductor. In this work, the strain and stress dependence of the current carrying capabilities as well as the stress and strain correlation are investigated for commercial coated conductors from Bruker HTS, Fujikura, SuNAM, SuperOx and SuperPower at 77 K, self-field and 4.2 K, 19 T.

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Section: Introductionmentioning

confidence: 99%

Electro-mechanical properties of REBCO coated conductors from various industrial manufacturers at 77 K, self-field and 4.2 K, 19 T

Barth

Mondonico

Senatore

2015

Supercond. Sci. Technol.

197

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“…Liang Ming et al used a Pacman spring apparatus to measure the critical current-strain characteristic curves of Nb3Sn multi-core strands with an internal preload strain of -0.055% at 4.2K, 12T. The experimental results show that IC reaches 277A when the applied strain is zero, the irreversible strain limit of the material is +0.6%, and the strain has a small effect on material retensioning at tensile strains less than +0.3%, figure 2 [18]. Walters et al designed an apparatus (figure 3) which allowed the sample to be over a length of 70mm and increased the strain that can be applied to almost 1.3%.…”

Section: Axial Experimentsmentioning

confidence: 99%

Mechanical properties and application of superconducting materials of Nb3Sn

Jin

2023

ACE

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Nb3Sn is one of the most promising low temperature superconducting materials and its high critical current density, high critical magnetic field strength and high critical transition temperature have attracted a lot of attention in many application areas. However, the superconductivity of Nb3Sn is strongly sensitive to its mechanical behaviour. The strain and torque arise from tension during cabling and electromagnetic forces during working operation can affect the critical performance of the strand. In this paper, the development of superconducting materials was firstly introduced in a brief way. Subsequently, the paper focused on several experiments to test the mechanical properties. Devices such as Pacman and TRASIS are used to measure the axial strain/stress, transverse force, spatial periodic contact loading cycles and periodic bending. In the next section, the paper introduced the applications and finally drew a conclusion. These results shed light on guiding future studies focusing on Nb3Sn and lay a foundation for subsequent mechanical studies of Nb3Sn.

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“…4 The superconductors' ability to carry high electrical current is influenced not only by the operating temperature and the magnetic field but also by the mechanical strain. [5][6][7] The electromechanical properties together with the in-field critical current performance of 2G HTS tape are highly important criteria in the process of selection of the tape for a particular application. 7,8 One of the most advanced methods which allow the studying of mechanical properties of engineering materials has proven to be the measurement of strain and stress using the atomic lattice planes as a strain gauge.…”

Section: Introductionmentioning

confidence: 99%

Influence of mechanical stress on electron transport properties of second-generation high-temperature superconducting tapes

Gaifullin¹,

Lee²,

Kelleher

et al. 2023

Low Temperature Physics

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Second-generation high-temperature superconductor (2G HTS) tapes have demonstrated the ability to generate high magnetic fields and critical currents at a wide operating temperature range. In this paper, we study the mechanical properties of 2G HTS tape measured simultaneously with its critical current. The lattice deformations in the tape’s substrate caused by applied mechanical stress were measured by neutron diffraction. In our experiments, the 2G HTS tape was exposed to uniaxial tensile force ranging from 250 to 1100 N at temperature 77 K. The current through the tape was scanned in the range from 22 to 42 A. The experimental results have been obtained in a cryogenic testing chamber for neutron scattering measurements of internal stresses under load with the incorporated HTS current leads. Critical stress is a vital parameter required for the modeling and designing of advanced superconducting magnets and also a variety of different superconducting applications based on 2G HTS tapes.

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Strain influence on Jc behavior of Nb3Sn multifilamentary strands fabricated by internal tin process for ITER

Cited by 8 publications

References 16 publications

Electro-mechanical properties of REBCO coated conductors from various industrial manufacturers at 77 K, self-field and 4.2 K, 19 T

Electro-mechanical properties of REBCO coated conductors from various industrial manufacturers at 77 K, self-field and 4.2 K, 19 T

Mechanical properties and application of superconducting materials of Nb3Sn

Influence of mechanical stress on electron transport properties of second-generation high-temperature superconducting tapes

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