Compelling mechanical properties of carbon nanotubes reinforced pure magnesium composite by effective interface bonding of Mg2Ni

被引：32

作者：

Han, Guoqiang ^{[1
]}

Du, Wenbo ^{[1
]}

Ye, Xiaoxin ^{[2
]}

Liu, Ke ^{[1
]}

Du, Xian ^{[1
]}

Wang, Zhaohui ^{[1
]}

Li, Shubo ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing, Peoples R China

[2] Osaka Univ, Joining & Welding Res Inst, Suita, Osaka, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 727卷

基金：

北京市自然科学基金;

关键词：

Metal matrix composites; Mechanical properties; Microstructure; Mg2Ni phase; Interface bonding; ALUMINUM-MATRIX COMPOSITES; POWDER-METALLURGY METHOD; ALLOY COMPOSITES; DUCTILITY; STRENGTH; CNTS; NANO;

D O I：

10.1016/j.jallcom.2017.08.133

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, a kind of nickel coated carbon nanotubes (Ni-CNTs) reinforced pure magnesium (Mg) matrix composite was prepared using two-step process. The nano-Mg2Ni phase at the interface was in-situ formed to improve the interface bonding between CNTs and Mg matrix. Results indicated that the yield and ultimate tensile strength of 2.0 wt. % Ni-CNTs/Mg composite were 278.3 MPa and 304.5 MPa, respectively, showing 77% and 48% increase in comparison with those of 2.0 wt. % CNTs/Mg composite. The remarkably enhanced mechanical properties were attributed to the strong interface bonding due to the in-situ formed nano-Mg2Ni phase. The corresponding strengthening mechanisms were regarded as the coupling interface effect of the coherent interface and the interstitial solid solution. Moreover, the CNTs acted as a bridging role in load transfer and obstructed the growth of cracks in Ni-CNTs/Mg composites. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：963 / 969

页数：7

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