Applied Superconductivity, Metallurgy, and Physics of Titanium Alloys

Collings, E. W.

doi:10.1007/978-1-4613-2095-1

Cited by 205 publications

(174 citation statements)

References 212 publications

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“…In the standard pinning model, one usually considers non-superconducting or weakly superconducting precipitates that hold or pin single quantized magnetic flux lines [41].…”

Section: F-valuesmentioning

confidence: 99%

Mechanism for the uniaxial strain dependence of the critical current in practical REBCO tapes

Osamura¹,

Machiya²,

Hampshire³

2016

Supercond. Sci. Technol.

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. In order to elucidate the effect of uniaxial strain on the critical current of practical REBCO tapes (REBa2Cu3O7-d, RE = Y and Gd) fabricated by Superpower and SuNAM, two types of critical current measurements were carried out. In the first, the tape sample was attached directly to a universal testing machine and pulled under a tensile load. In the second, the tape was soldered to a Cu-Be springboard (SB) and then attached to the testing machine and then pushed or pulled in order to apply both tensile and compressive strains to the tape sample. An inverse parabolic behavior was observed for the uniaxial strain dependence of the critical current of both tapes.Using synchrotron radiation, the local strain exerted on the REBCO layer was measured at room temperature under the conditions used for the two techniques for making Ic measurements. On the basis of these room temperature data, the local strain exerted on the REBCO layer at 77 K was numerically evaluated.A one-dimensional chain model for current flow in the REBCO material with fractional lengths of A-domains and B-domains oriented along the uniaxial strain direction is proposed. The model can explain the parabolic strain behavior of the critical current and shows that the strain at which the peak in Ic occurs, is not only determined by pre-compression or pre-tension on the superconductor at the operating temperature, but also by the ratio of the fractional amounts of the two domains.

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“…In the standard pinning model, one usually considers non-superconducting or weakly superconducting precipitates that hold or pin single quantized magnetic flux lines [41].…”

Section: F-valuesmentioning

confidence: 99%

Mechanism for the uniaxial strain dependence of the critical current in practical REBCO tapes

Osamura¹,

Machiya²,

Hampshire³

2016

Supercond. Sci. Technol.

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“…Table 2. Only parent ¢ phase was detected in AT1173, whereas Ti 3 Au (A15), Zr 33 Ti 40 Au 27 (C14) and ¡ phase were detected in the specimens annealed below 1073 K. Zr 33 Ti 40 Au 27 (C14) is a hexagonal Laves phase reported by Waterstrat.…”

Section: Methodsmentioning

confidence: 71%

“…The ¢ matrix with an averaged grain size of 1 µm and the contrast of high density dislocations introduced by the cold-rolling was observed; the specimen was not recrystallized. The precipitation of Zr 33 Ti 40 Au 27 Laves phase was also detected. The inset of Fig.…”

Section: )mentioning

confidence: 86%

“…Fine ellipsoidal ½-phase was observed entire the fully recrystallized parent ¢-phase. In general, ½-phase is formed by quenching (athermal-½ phase) or aging (isothermal-½ phase) 33) and the latter one in Ti-Cr alloy is cuboidal. 34,35) The ellipsoidal ½-phase in this study is, therefore, athermal-½ phase formed by quenching.…”

Section: )mentioning

confidence: 99%

“…4 corresponds to the SADP of Zr 33 Ti 40 Au 27 Laves phase with a zone axis of ½ 4 23 Laves that was taken from the encircled region of the BF image. The averaged particle size of Zr 33 Ti 40 Au 27 Laves phase was about 500 nm. Ti 3 Au was observed by XRD ( Fig.…”

Section: )mentioning

confidence: 99%

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Effect of Annealing Temperature on Microstructure and Superelastic Properties of Ti-Au-Cr-Zr Alloy

et al. 2015

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Effect of annealing temperature on microstructure and superelasticity of Ti-4Au-5Cr-8Zr (mol%) was investigated. Only ¢ phase was observed in the specimen annealed at 1173 K, whereas the precipitation of Ti 3 Au, Zr 33 Ti 40 Au 27 (Laves phase) and ¡ phase occurred in the specimens annealed below 1073 K. Superelasticity was clearly observed in the specimens annealed at 1073 K and 1173 K, though it was absent in the specimens annealed at 873 K and 973 K. The maximum superelastic recovery strain was increased by the precipitation of Ti 3 Au in the specimen annealed at 1073 K. This is due to the increase in the critical stress for slip by the precipitation strengthening effect of Ti 3 Au.

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Superconductors, Metallurgy of Ductile Alloys

Lee

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

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Applied Superconductivity, Metallurgy, and Physics of Titanium Alloys

Cited by 205 publications

References 212 publications

Mechanism for the uniaxial strain dependence of the critical current in practical REBCO tapes

Mechanism for the uniaxial strain dependence of the critical current in practical REBCO tapes

Effect of Annealing Temperature on Microstructure and Superelastic Properties of Ti-Au-Cr-Zr Alloy

Superconductors, Metallurgy of Ductile Alloys

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