Investigation on Strength, Ductility and Electrical Conductivity of Cu-4Ag Alloy Prepared by Cryorolling and Subsequent Annealing Process

Journal Article · Fri Nov 15 04:00:00 EST 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-04448-7· OSTI ID:22970318

Guo, Shengli; Liu, Shengpu ^[1]; Liu, Jiachen ^[2]; Gao, Zhaoshun ^[3]; Li, Defu; Liu, Zhiguo ^[1]

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1. General Research Institute for Non-Ferrous Metals (China)
2. Taiyuan University of Science and Technology (China)
3. Chinese Academy of Sciences, Institute of Electrical Engineering (China)

Cu-Ag alloy is widely used as conductive material for high-field pulsed magnets in electrical industry. The cryorolling technique is considered as the most applicable severe plastic deformation technique. Therefore, in this study, cryorolling and subsequent annealing process were used to prepare Cu-4Ag (in wt.%) alloy sheets. The strength, ductility and electrical conductivity of Cu-4Ag alloy sheets were investigated. Microstructure of Cu-4Ag alloy was also studied by OM, SEM, XRD and TEM. As a result, the cryorolling specimens after annealing at temperature of 300 °C display a good combination of tensile strength of 652.2 ± 6.0 MPa, moderate elongation of 12.5 ± 0.7% and electrical conductivity of 80.6 ± 0.2% IACS. This is due to the presence of dislocations, dislocation cells, nanograins and nanotwins in the non-recrystallized regions and fine nanoscaled silver precipitates. Besides, a good ductility is achieved in this condition due to its desirable ductile fracture characteristics.

• OSTI ID: 22970318
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 11 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
ANNEALING
DUCTILITY
ELECTRIC CONDUCTIVITY
PLASTICITY
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION