Journal
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
Volume 63, Issue 12, Pages 2505-2517Publisher
SCIENCE PRESS
DOI: 10.1007/s11431-020-1633-8
Keywords
high strength; high conductivity; Cu alloys
Funding
- National Key RAMP
- D Program of China [2017YFB1200800]
- National Natural Science Foundation of China [11725210, 51827810, 51637009]
- Fundamental Research Funds for the Central Universities [2018XZZX001-05]
- Zhejiang Xinmiao Talent Projects
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High strength and high conductivity (HSHC) Cu alloys are widely used in many fields, such as high-speed electric railway contact wires and integrated circuit lead frames. Pure Cu is well known to have excellent electrical conductivity but rather low strength. The main concern of HSHC Cu alloys is how to strengthen the alloy efficiently. However, when the Cu alloys are strengthened by a certain method, their electrical conductivity will inevitably decrease to a certain extent. This review introduces the strengthening methods of HSHC Cu alloys. Then the research progress of some typical HSHC Cu alloys such as Cu-Cr-Zr, Cu-Ni-Si, Cu-Ag, Cu-Mg is reviewed according to different alloy systems. Finally, the development trend of HSHC Cu alloys is forecasted. It is pointed out that precipitation and micro-alloying are effective ways to improve the performance of HSHC Cu alloys. At the same time, the production of HSHC Cu alloys also needs to comply with the large-scale, low-cost development trend of industrialization in the future.
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