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Microstructure and electrical conductivity of aluminium/steel bimetallic rods processed by severe plastic deformation

journal contribution
posted on 2016-07-01, 00:00 authored by Yuanshen Qi, Rimma Lapovok, Y Estrin
Equal-channel angular pressing (ECAP) was used to fabricate Al/steel bimetallic rod for potential application in overhead transmission conductors. Bimetallic rods consisted of an austenitic stainless steel 316L core and an Al alloy 6201 cladding layer. By means of ECAP processing at 175°C, increase of mechanical strength without loss of electrical conductivity was achieved for one particular rod geometry out of three geometries tested. X-ray diffraction and transmission electron microscopy were employed to analyse how the microstructure was influenced by the number of processing passes and the bimetallic rod geometry. The co-deformation mechanism of the bimetallic rod under ECAP and accelerated dynamic ageing of Al alloy 6201 were discussed based on the microstructure characterisation results.

History

Journal

Journal of materials science

Volume

51

Issue

14

Pagination

6860 - 6875

Publisher

Springer

Location

Berlin, Germany

ISSN

0022-2461

eISSN

1573-4803

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2016, Springer