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

被引：0
作者：
Yuanshen Qi
Rimma Lapovok
Yuri Estrin
机构：
[1] Monash University,Department of Materials Science and Engineering
[2] Deakin University,Institute for Frontier Materials
[3] NUST MISiS,Laboratory of Hybrid Nanostructured Materials
来源：
Journal of Materials Science | 2016年 / 51卷
关键词：
Severe Plastic Deformation; Friction Stir Processing; Accumulative Roll Bonding; Extrusion Direction; Steel Core;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：6860 / 6875
页数：15
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