Some Superconducting Properties of Ti–Nb–Ta Ternary Alloys

Suenaga, M.; Ralls, K.M.

doi:10.1063/1.1657215

Cited by 54 publications

(21 citation statements)

References 17 publications

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“…Major studies of Ti-Nb-Ta were conducted by BARANOV and coworkers [BAR70a] (see also SAVITSKII et al [SAv73,p. 329] and SUENAGA and RALLS [SuE69]). Subsequently, the Soviet work was the subject of multiple-regression analysis to establish a Tc versus composition relationship.…”

Section: Substitutes For Niobium In Ti-nb Alloysmentioning

confidence: 99%

“…The results of these investigations were in reasonable agree-Section 12.5 Titanium-Niobium-Base Alloys-Experimental Results The isothermal temperatures are in parentheses. The data indicated are the magnetic half-transition points-after SUENAGA and RALLS [SuE69].…”

Section: Substitutes For Niobium In Ti-nb Alloysmentioning

confidence: 99%

“…The composition dependence of Tc in the Ti-Nb-Ta system, from the work of SUE NAG A and RALLS [SuE69], is displayed on a composition triangle in Figure 12-7. As an example of the rate of decrease of Tc with increasing Ta content, we note that at 50 at.…”

Section: Substitutes For Niobium In Ti-nb Alloysmentioning

confidence: 99%

“…Ralls [SuE69] have used a superscript" +" to signify the inclusion of only Maki [MAK64,MAK66] paramagnetic limitation. Saint-James et al [SAI69] alone adopt what is perhaps the most rational approach of assigning no asterisk to the nonparamagnetic GLAG-type quantity, one asterisk to a paramagneticallylimited quantity and a double asterisk when, in addition to paramagnetic effects, spin-orbit scattering is operative.…”

Section: Pauli Paramagnetic Limitation (Ppl)mentioning

confidence: 99%

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Applied Superconductivity, Metallurgy, and Physics of Titanium Alloys

Collings¹

1986

205

125

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All rights reservedNo part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise, without written permission from the Publisher To BETTY JANE AND CHRISTOPHER also to an international community of low-temperature physicists and cryogenic engineers whose work is represented on these pagesType-2 Superconductor in the Critical Mixed State.-Carbon-replicated electron micrograph of a ferromagnetic-particle-decorated representation of the arrangement of axially directed flux lines in an annealed-and-deformed Pb-In(6.3 at.OJo) 4-mm!6 rod in the trapping critical state (see, e.g., Figure 16-7). The arrangement of the flux lines was found to change continuously from long-range-ordered in the relatively high field (-70 G) interior region of the sample (;;, 400 ,an deep) [left-hand plate], to amorphous in the low-residual-field region just below the surface (,,; 100,an deep) [right-hand plate]. In this material, for which K = 2 at 1.2 K, the flux-lattice parameter at 70 G is about 0.6 I'm. Original micrograph courtesy of U. Essmann, Max-Planck-Institute fUr Metallforschung, Institut fUr Physik, Stuttgart, West Germany. (Reference: H. Trauble and U. Essmann, J. Appl. Phys. 39,4052-4059 (1968))1.General Preface xi property optimization. (iii) Superconductor and superconducting magnet design engineers for whom the chapters on Stability, AC Loss, and Conductor Design are intended. (iv) Manufacturers of "NbTi" alloy superconductors who wish to become reapprised of the Ti-alloy metallurgy and metal physics that underlies the behavior and properties of their product. Administrative Credits and Genesis

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Section: Substitutes For Niobium In Ti-nb Alloysmentioning

confidence: 99%

Section: Substitutes For Niobium In Ti-nb Alloysmentioning

confidence: 99%

Section: Substitutes For Niobium In Ti-nb Alloysmentioning

confidence: 99%

Section: Pauli Paramagnetic Limitation (Ppl)mentioning

confidence: 99%

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Applied Superconductivity, Metallurgy, and Physics of Titanium Alloys

Collings¹

1986

205

125

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“…The effect is minor at 4.2 K but at 2 K there is an increase in Hc2 of 1-1.3 T [2], [3]. Nb-Ti-Ta alloys have the same ease of processing as binary Nb-Ti alloys [4], [5] but the alloy is more difficult to produce to high chemical homogeneity and is more expensive.…”

Section: Introductionmentioning

confidence: 99%

Development of high performance multifilamentary Nb-Ti-Ta superconductor for LHC insertion quadrupoles

Lee

Fischer

Larbalestier

et al. 1999

IEEE Trans. Appl. Supercond.

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-A preliminary investigation of a new Nb-Ti-Ta (39wt%Nb, 44wt.%Ti, 17wt.%Ta) alloy has been investigated as a possible material for application at 1.9 K and 10.5 T in the insertion quadrupoles of LHC. 1550 A/mm*, the highest yet reported critical current density at 10.5 T (1.9 K), was achieved in a monofilament of this material. The initial multifilamentary production strand produced a lower 10.5 T (1.9 K) critical current density of 1370 A/mmz. Large variations in precipitate size were produced in the microstructures, which have yet to be fully optimized. Quantitative analysis of the microstructures in a Nb-44 wt.%Ti-15 wt.%Ta alloy reveals a linear relationship between volume % of a-Ti precipitate and critical current density at 5 T and 8 T (4.2 K). The increase in critical current with precipitate volume is less than for Nb-47 wt.%Ti. High resolution FESEM electron backscatter images suggest a high atomic number region adjacent to the grain boundaries after heat treatment.

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Superconductors, Metallurgy of Ductile Alloys

Lee

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

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Some Superconducting Properties of Ti–Nb–Ta Ternary Alloys

Cited by 54 publications

References 17 publications

Applied Superconductivity, Metallurgy, and Physics of Titanium Alloys

Applied Superconductivity, Metallurgy, and Physics of Titanium Alloys

Development of high performance multifilamentary Nb-Ti-Ta superconductor for LHC insertion quadrupoles

Superconductors, Metallurgy of Ductile Alloys

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