Some properties of NbTiTa ternary alloys

Author

Gregory, E. ; Pyon, T.

Author_Institution

IGC Adv. Supercond., Waterbury, CT, USA

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

1567

Lastpage

1570

Abstract

There is a need for a relatively low cost, trouble free material for use in intermediate field (10.5T to 11.0T) accelerator magnets. These would operate at 1.9 K and the aim is to produce ductile material with properties superior, at that temperature, to those of the 46.5 wt.% Ti 53.5 wt.% Nb binary alloy. Three alloys were plasma melted to ensure high homogeneity. The compositions were, in weight percentage, Ta17Ti44Nb39 Ta28Ti41Nb31, Ta12Ti46Nb42. These three alloys were processed as monofilamentary material and tested after a series of different heat treatments. Attempts were made to optimize J/sub c/ for each of the compositions at 4.2 K and these samples were then tested at 1.9 K and the shift in the field for a constant J/sub c/ determined. A similar investigation on multifilamentary materials of these compositions is now being carried out.

Keywords

composite superconductors; critical current density (superconductivity); heat treatment; niobium alloys; tantalum alloys; titanium alloys; type II superconductors; 1.9 K; 10.5 to 11 T; 4.2 K; NbTiTa; NbTiTa ternary alloys; accelerator magnets; compositions; critical current density; ductile material; heat treatments; high homogeneity; monofilamentary material; properties; Accelerator magnets; Costs; Magnetic materials; Materials testing; Niobium alloys; Plasma accelerators; Plasma materials processing; Plasma properties; Plasma temperature; Titanium alloys;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.784694

Filename

784694