期刊
MATERIALS & DESIGN
卷 209, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2021.109951
关键词
Metal matrix composites; Powder metallurgy; Wire drawing; Mechanical properties; Electrical conductivity
A breakthrough was achieved in the strength-conductivity trade-off in cold wire drawn reduced graphene oxide-aluminum composite, showing a strength-conductivity combination comparable or even superior to conventional aluminum alloy conductors.
We present a breakthrough of the strength-conductivity trade-off in cold wire drawn reduced graphene oxide (RGO)-aluminum (Al) composite. The composite was fabricated by a full glovebox powder metal-lurgy process, followed by hot rolling and wire drawing down to 0.5 mm wire diameter. Compared to the unreinforced Al fabricated by the same methodology, the incorporation of RGO in the 0.5 mm wire sam-ple gave rise to approximately 20.7% improvement in mechanical strength, with only-3.6% sacrifice in electrical conductivity. Furthermore, the 331.6 +/- 6.8 MPa compressive strength and-54.1% International Annealed Copper Standard (IACS) of the 0.5 mm wire RGO-Al composite exhibited a strength-conductivity combination comparable or even superior to conventional Al alloy conductors that go through complex thermal-mechanical treatments. Such a property synergy was interpreted by the ultra-fine Al grain structure and the elongated grain morphology rendered by the deformation processing steps, and an Orowan-typed strengthening mechanism owing to the homogenously dispersed natural amorphous alumina and RGO nanosheets in the composite. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据