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Article

Effect of Severe Plastic Deformation on the Conductivity and Strength of Copper-Clad Aluminium Conductors

1
Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
2
Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
3
Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa 450000, Russia
*
Author to whom correspondence should be addressed.
Metals 2019, 9(9), 960; https://doi.org/10.3390/met9090960
Received: 4 August 2019 / Revised: 20 August 2019 / Accepted: 27 August 2019 / Published: 1 September 2019
Aluminium rods with different copper sheath thicknesses were processed by severe plastic deformation at room temperature and then annealed, to join the constituent metals and produce a nanocrystalline microstructure. A study of the effects of the deformation parameters, copper cladding thickness and annealing temperature on the electrical conductivity and hardness of the conductors is reported. It is shown that an interface forms between constituents because of intermixing in the course of severe shear deformation under high hydrostatic pressure and diffusion during the subsequent annealing. The effective conductivity of the aluminium copper-clad conductor dropped after deformation, but was recovered during annealing, especially during short annealing at 200 °C, to a level exceeding the theoretically predicted one. In addition, the annealing resulted in increased hardness at the interface and copper sheath. View Full-Text
Keywords: aluminium copper-clad rod; hardness; effective electrical conductivity; severe plastic deformation aluminium copper-clad rod; hardness; effective electrical conductivity; severe plastic deformation
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MDPI and ACS Style

Lapovok, R.; Dubrovsky, M.; Kosinova, A.; Raab, G. Effect of Severe Plastic Deformation on the Conductivity and Strength of Copper-Clad Aluminium Conductors. Metals 2019, 9, 960. https://doi.org/10.3390/met9090960

AMA Style

Lapovok R, Dubrovsky M, Kosinova A, Raab G. Effect of Severe Plastic Deformation on the Conductivity and Strength of Copper-Clad Aluminium Conductors. Metals. 2019; 9(9):960. https://doi.org/10.3390/met9090960

Chicago/Turabian Style

Lapovok, Rimma, Michael Dubrovsky, Anna Kosinova, and Georgy Raab. 2019. "Effect of Severe Plastic Deformation on the Conductivity and Strength of Copper-Clad Aluminium Conductors" Metals 9, no. 9: 960. https://doi.org/10.3390/met9090960

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