MICROSTRUCTURE AND MECHANICAL PROPERTIES OF GRAPHENE-REINFORCED ALUMINUM-MATRIX COMPOSITES

被引：24

作者：

Du, Xiaoming ^{[1
]}

Zheng, Kaifeng ^{[1
]}

Liu, Fengguo ^{[1
]}

机构：

[1] Shenyang Ligong Univ, Sch Mat Sci & Engn, Nanping Middle Rd 6,Hunnan St, Shenyang 110159, Liaoning, Peoples R China

来源：

MATERIALI IN TEHNOLOGIJE | 2018年 / 52卷 / 06期

关键词：

aluminum-matrix composites; graphene; microstructure; mechanical properties; TENSILE PROPERTIES; CARBON NANOTUBES; NANOCOMPOSITES;

D O I：

10.17222/mit.2018.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene has a high fracture strength. good ductility and low coefficient of thermal expansion, making it an ideal reinforcement for composite materials. This paper reports on an aluminum-matrix composite reinforced with graphene (graphene/All using ball milling and hot-press sintering. The effect of the graphene content on the microstructures. mechanical properties and fracture mechanisms of the composites were investigated. It is shown that 0.25 w/% and 0.5 w/% graphene contents modified with copper are homogeneously dispersed into the aluminum matrix. The composite with the 0.5 w/% graphene content exhibits the highest tensile strength and elongation; its improvement over the unreinforced aluminum matrix is 31.0 % and 30.6 %, respectively. With the increasing graphene content up to 1.0 w/%, the aggregation of graphene in the composite is apparent, seriously reducing the tensile properties. The fracture mechanism of the composites changes from ductile to brittle.

引用

页码：763 / 768

页数：6

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