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Architectured hybrid conductors: Aluminium with embedded copper helix

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Version 2 2024-06-04, 05:26
Version 1 2020-05-29, 13:05
journal contribution
posted on 2024-06-04, 05:26 authored by Rimma LapovokRimma Lapovok, VV Popov, Y Qi, A Kosinova, A Berner, C Xu, E Rabkin, R Kulagin, J Ivanisenko, B Baretzky, OV Prokof'eva, AN Sapronov, DV Prilepo, Y Beygelzimer
© 2019 The Authors This study is inspired by the potential of application-designed aluminium-copper conductors. This work combines recently discovered advantages of hybrids with one constituent having a helical architecture with the benefits provided by severe plastic deformation (SPD) methods. The hybrids are made by embedding copper helixes in melted aluminium and subjecting cast hybrid ingots to different SPD techniques. The electrical conductivity, microstructure features and strength of the produced samples are discussed in relation to effect of SPD and annealing on both constituents and an interface zone formed during the hybrids' production. It was shown that between all processing techniques the reciprocal extrusion (RE) has the great potential for production of lightweight conductors with high conductivity and enhanced strength. A new model describing the effective electrical conductivity of hybrid samples, consisting of an aluminium matrix with an embedded copper helix and intermetallic containing interface, is developed and justified by experimental data. The model is shown to be instrumental for analysis of the effect of the helix's parameters and interface width on effective conductivity of the hybrid samples and could be used for optimal design of hybrid conductors.

History

Journal

Materials and Design

Volume

187

Article number

ARTN 108398

Pagination

1 - 17

Location

Amsterdam, The Netherlands

Open access

  • Yes

ISSN

0264-1275

eISSN

1873-4197

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Publisher

ELSEVIER SCI LTD