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High strength and high conductivity Cu alloys: A review

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Abstract

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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Authors and Affiliations

  1. School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China

    HuiYa Yang, ZiChao Ma, ChenHui Lei, Liang Meng, JiaBin Liu & HongTao Wang

  2. Center for X-Mmechanics, Zhejiang University, Hangzhou, 310027, China

    HuiYa Yang, ChenHui Lei, YouTong Fang, JiaBin Liu & HongTao Wang

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  1. HuiYa Yang
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  2. ZiChao Ma
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Correspondence to JiaBin Liu or HongTao Wang.

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This work was supported by the National Key R&D Program of China (Grant No. 2017YFB1200800), the National Natural Science Foundation of China (Grant Nos. 11725210, 51827810 and 51637009), the Fundamental Research Funds for the Central Universities (Grant No. 2018XZZX001-05), and the Zhejiang Xinmiao Talent Projects.

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Yang, H., Ma, Z., Lei, C. et al. High strength and high conductivity Cu alloys: A review. Sci. China Technol. Sci. 63, 2505–2517 (2020). https://doi.org/10.1007/s11431-020-1633-8

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