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Influence of Aging Treatment on the Microstructure and Properties of a Deformation-Processed Cu-Ni-Co-Si Alloy

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Abstract

We investigated the influence of aging on the microstructure and properties of a deformation-processed Cu-Ni-Co-Si alloy. Aging caused recovery and recrystallization in the Cu matrix and the precipitation of Ni2Si, Cu15Si4 and CoSi. At the temperature of 350 °C, increasing aging time caused the hardness to increase to a peak value at 0.5 h, and subsequently to decrease at longer aging times. At higher temperatures, the hardness decreased with increasing aging time. The conductivity and elongation to fracture increased with increasing aging time and tended to saturation at about 4 h. The hardness, conductivity and plasticity of the alloy cold rolled at 47% reduction, after the optimal aging treatments at (i) 350 °C for 0.5 h, (ii) 400 °C for 1 h, (iii) 500 °C for 0.5 h, were (i) 262 HV, 45.8%IACS and 3.6%; (ii) 249 HV, 48.1%IACS and 4.4%; (iii) 230 HV, 49.8%IACS and 5.5%, respectively. Based upon our results, we recommend the adoption of the optimized process.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (51861025), and the Provincial Natural Science Foundation of Jiangxi (20202ACBL20087, 20192BAB206001).

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Authors and Affiliations

  1. Jiangxi Key Laboratory for Precision Actuation and Control, Nanchang Institute of Technology, Nanchang, 330099, People’s Republic of China

    Xiaochun Sheng, Keming Liu, Haize Yu, Mulin Li, Jinke Shi, Zhi Shen & Kai Fu

  2. Engineering Technology Research Center, Zhongye Changtian International Engineering Co., Ltd, Changsha, 410205, People’s Republic of China

    Xiaolong Li

  3. School of Materials Science and Engineering, Central South University, Changsha, 410083, People’s Republic of China

    Haitao Zhou

  4. Centre for Advanced Materials Processing and Manufacturing, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Qld, 4072, Australia

    Andrej Atrens

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  1. Xiaochun Sheng
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  2. Xiaolong Li
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Correspondence to Keming Liu.

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Sheng, X., Li, X., Liu, K. et al. Influence of Aging Treatment on the Microstructure and Properties of a Deformation-Processed Cu-Ni-Co-Si Alloy. J. of Materi Eng and Perform 32, 221–231 (2023). https://doi.org/10.1007/s11665-022-07497-7

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