Comparison of cold hydrostatic extrusion with wire drawing as a method of manufacturing Nb/sub 3/Sn superconducting wires

Technical Report · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5557831

Thadani, V F

The first objective was to assess the merits of cold hydrostatic extrusion as an alternative metal forming process and to compare it with conventional wire drawing. A series of Nb/sub 3/Sn monofilamentary wires was prepared by cold hydrostatic extrusion. Another series of conductors was prepared by wire drawing. These wires had identical materials, dimensions, bronze-to-niobium ratios and diffusion treatment as the extruded wires. A direct comparison showed that cold hydrostatic extrusion can serve as a good alternative to the wire drawing technique of manufacturing Nb/sub 3/Sn wires because cold hydrostatic extrusion reduces the number of processing steps, i.e., fewer passes and fewer intermediate anneals. The second objective was to evaluate important superconducting properties of the hydrostatically extruded samples. The effect of strain on critical current density, J/sub c/ at 4.2K and 8T was examined.

• Research Organization: Lehigh Univ., Bethlehem, PA (USA). Dept. of Metallurgy and Materials Engineering
• DOE Contract Number: AS02-79ER10367
• OSTI ID: 5557831
• Report Number(s): DOE/ER/10367-7; ON: DE82007533
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
420201 -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLD WORKING
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXTRUSION
FABRICATION
MATERIALS WORKING
NIOBIUM COMPOUNDS
PERFORMANCE
PHYSICAL PROPERTIES
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
TIN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WIRES