Development of a high strength, high conductivity copper-silver alloy for pulsed magnets
- Superconducting and Cryogenic Materials Div., Tsukuba Lab., National Research Inst. for Metals, 1-2-1, Sengen, Tsukuba, Ibaraki 305 (JP)
Development of highly conductive materials with high strength is requisite for conductors of high-field magnets. To develop such materials, the Cu-Ag alloys (2-60 at%) and their fabrication methods have been investigated. The Cu-Ag alloys were prepared by melting electrolytic Cu and pure Ag pellets in an argon atmosphere, and then cold-drawn to a 99.2% reduction in area. The heat treatments were performed several times during the drawing process. Strength and conductivity of the Cu-Ag alloys vary with thermomechanical treatments. The optimum combination of high strength and high electrical conductivity were obtained by cold-drawing the alloy with intermediate heat treatments at 350-450{degrees}C for 1-2h. The intermediate-heat-treated Cu-16 at%Ag composite with 99% reduction in area had an ultimate tensile strength of 1000 MPa and an electrical conductivity of 80 IACS% at room temperature. This paper reports that since the Cu-Ag alloys fabricated by the present method have higher values of both tensile strength and conductivity than those of Cu-Nb and other Cu-based alloys, they would be one of the most promising conductor materials for the high field magnets.
- OSTI ID:
- 5363670
- Report Number(s):
- CONF-910662--
- Journal Information:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 28:1; ISSN IEMGA; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103 -- Metals & Alloys-- Mechanical Properties
360107 -- Metals & Alloys-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
COLD WORKING
COPPER ALLOYS
COPPER BASE ALLOYS
ELECTRIC COILS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EQUIPMENT
FABRICATION
HEAT TREATMENTS
MAGNET COILS
MAGNETIC FIELDS
MAGNETS
MATERIALS TESTING
MATERIALS WORKING
MECHANICAL PROPERTIES
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
PULSED MAGNET COILS
SILVER ADDITIONS
SILVER ALLOYS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTIVITY
TENSILE PROPERTIES
TESTING
THERMOMECHANICAL TREATMENTS