Enhanced tensile properties and electrical conductivity of Cu-CNT nanocomposites processed via the combination of flake powder metallurgy and high pressure torsion methods

被引:65
作者
Akbarpour, M. R. [1 ]
Mirabad, H. Mousa [2 ]
Alipour, S. [2 ]
Kim, H. S. [3 ]
机构
[1] Univ Maragheh, Dept Engn, Mat Engn Div, Maragheh, East Azerbaijan, Iran
[2] Sharif Univ Technol, Dept Mat Sci & Engn, POB 11365-9466, Tehran, Iran
[3] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, South Korea
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 773卷
基金
新加坡国家研究基金会;
关键词
Copper; Carbon nanotube; High pressure torsion (HPT); Strengthening; Nanocomposite; Flake powder metallurgy; CARBON NANOTUBES; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; COPPER; GRAPHENE; MICROSTRUCTURES; REINFORCEMENT; FABRICATION; IMPROVEMENT; STRENGTH;
D O I
10.1016/j.msea.2019.138888
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Using flake powder metallurgy (FPM) technique, combined with high pressure torsion, super high strength-ductile Cu-CNT nanocomposite with high electrical conductivity is developed. The nanocomposite with 4 vol % CNT showed high tensile strength of similar to 474 MPa, high electrical conductivity of similar to 82.5% IACS as well as appreciable ductility of similar to 11%. According to microstructural studies, the excellent properties of the nanocomposite are attributed to the formation of trimodal grains, high density of twin and low angle grain boundaries, improvement in CNT and Cu interfacial bonding, and appropriate distribution and maintaining the microstructure of the nanotubes in the production process. The results of this work provide a new pathway to produce strong, conductive, and ductile metal matrix nanocomposites.
引用
收藏
页数:10
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