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Evaluation of the Electrical Conductivity and Mechanical Properties of Cu–3Ti–1.5Ni–0.5Si Quaternary Alloy

  • Recent Advances in Multicomponent Alloys and Ceramics
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Abstract

A high strength and super electrical conductive Cu–3Ti–1.5Ni–0.5Si quaternary alloy with improved hardness and ductility has been developed. The alloy components were melted in an inert gas controlled vacuum melting furnace, rapidly cooled in ice, homogenized at 900°C for 5 h, and age heat treated at an aging temperature of 480°C for 1, 2, 3, 4, and 5 h, respectively. The strength, hardness, ductility, and the electrical conductivity of the developed alloys were investigated and the microstructure analyzed using scanning electron microscopy (SEM). The average grain size and particle size distributions were obtained and discussed. Results show that the alloy recorded high strength and hardness of 760 MPa and 385 HV, respectively, after aging for 5 h. These improvements were linked with the minimal average grain size of ~4.5 µm and uniform particle size distribution. Excellent electrical conductivity and percentage elongation with maximum values of 37.4% IACS and 25.1%, respectively, were also recorded after 1 h. The studied Cu–3Ti–1.5Ti–0.5Si alloy demonstrated excellent combinations of ductility, strength, hardness, and electrical conductivity.

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Acknowledgement

The authors appreciate the support of Notex Electronics Nig. Ltd, Cutix Cable Plc., and Unique Foundry towards the successful completion of this research work.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

    K. C. Nnakwo, J. U. Odo, K. O. Eweka, J. S. Okafor & A. I. Ijomah

  2. Department of Materials Science and Engineering, African University of Science and Technology, Abuja, Nigeria

    E. A. Maduka

  3. Department of Metallurgical and Materials Engineering, Enugu State University of Science and Technology, Enugu, Nigeria

    B. C. Ugwuanyi

Authors
  1. K. C. Nnakwo
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  2. J. U. Odo
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  3. K. O. Eweka
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  4. J. S. Okafor
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  5. A. I. Ijomah
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  6. E. A. Maduka
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  7. B. C. Ugwuanyi
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Correspondence to K. C. Nnakwo.

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Nnakwo, K.C., Odo, J.U., Eweka, K.O. et al. Evaluation of the Electrical Conductivity and Mechanical Properties of Cu–3Ti–1.5Ni–0.5Si Quaternary Alloy. JOM 74, 4174–4180 (2022). https://doi.org/10.1007/s11837-022-05293-1

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  • DOI: https://doi.org/10.1007/s11837-022-05293-1

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