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Effect of severe plastic deformation on the conductivity and strength of copper-clad aluminium conductors

Lapovok, Rimma, Dubrovsky, M, Kosinova, A and Raab, G 2019, Effect of severe plastic deformation on the conductivity and strength of copper-clad aluminium conductors, Metals, vol. 9, no. 9, pp. 1-9, doi: 10.3390/met9090960.

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Title Effect of severe plastic deformation on the conductivity and strength of copper-clad aluminium conductors
Author(s) Lapovok, RimmaORCID iD for Lapovok, Rimma orcid.org/0000-0002-1395-9814
Dubrovsky, M
Kosinova, A
Raab, G
Journal name Metals
Volume number 9
Issue number 9
Start page 1
End page 9
Total pages 9
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2019-09
ISSN 2075-4701
Keyword(s) Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
aluminium copper-clad rod
hardness
effective electrical conductivity
severe plastic deformation
ULTRAFINE-GRAINED MATERIALS
INTERFACE FORMATION
SHEAR
ECAP
CU
Summary 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.
Language eng
DOI 10.3390/met9090960
Indigenous content off
Field of Research 091207 Metals and Alloy Materials
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30132128

Document type: Journal Article
Collections: Institute for Frontier Materials
Open Access Collection
GTP Research
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.