Nb/sub 3/Al wire produced by powder metallurgy and rapid quenching from high temperatures

Conference · Tue Feb 28 23:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:5969795

Thieme, C L.H.; Pourrahimi, S; Foner, S

Powder metallurgy processed Nb-25at%Al wires were annealed at temperatures just below the melting temperature. Depending on anneal conditions, the entire Nb-Al part of the wire could be rapidly quenched as a metastable A2 Nb(Al) solid solution with an Al concentration exceeding 23at%. This A2 phase is sufficiently ductile to be bent without incurring damage. A second anneal at 950/sup 0/C converted the A2 into A15. J/sub c/ was 10/sup 4/ A/cm/sup 2/ at 22 T, and T/sub c/ was 17.8 K. The rapid quenching of Nb-Al powder metallurgy processed wire is a possible alternative to obtain improved high field properties.

• Research Organization: 9510048; 9510048
• OSTI ID: 5969795
• Report Number(s): CONF-880812-
• Journal Information: IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 25:2; ISSN IEMGA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ALUMINIUM ALLOYS
ANNEALING
ELECTRICAL PROPERTIES
ENERGY LEVELS
EXCITED STATES
HEAT TREATMENTS
MAGNETIC FIELDS
METALLURGY
METASTABLE STATES
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PHYSICAL PROPERTIES
POWDER METALLURGY
QUENCHING
SUPERCONDUCTING WIRES
WIRES