Fabrication and mechanical properties of CNTs/Mg composites prepared by combining friction stir processing and ultrasonic assisted extrusion

Junhao Liang; Hejun Li; Lehua Qi; Wenlong Tian; Xuefeng Li; Xujiang Chao; Jianfeng Wei

doi:10.1016/j.jallcom.2017.09.009

Fabrication and mechanical properties of CNTs/Mg composites prepared by combining friction stir processing and ultrasonic assisted extrusion

Junhao Liang, Hejun Li, Lehua Qi, Wenlong Tian, Xuefeng Li, Xujiang Chao, Jianfeng Wei

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

98 Scopus citations

Abstract

A novel process for preparing carbon nanotubes (CNTs) reinforced magnesium nanocomposites were developed, which combined friction stir processing (FSP) and ultrasonic assisted extrusion. A very good dispersion of CNTs in AZ91D alloy could be observed. It was demonstrated that the strength of Mg nanocomposites was remarkably enhanced. This was contributed to dislocation strengthening mechanism and stress transfer mechanism, not concerned with the grain refinement. Moreover, the composites maintained good ductility. The interfaces between CNTs and Mg matrix were well bonded, and the interfacial reaction product formation of Al₂MgC₂ was confirmed. A few edge dislocations were observed at CNTs-matrix boundaries by adding carbon nanotubes.

Original language	English
Pages (from-to)	282-288
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	728
DOIs	https://doi.org/10.1016/j.jallcom.2017.09.009
State	Published - 2017

Keywords

Carbon nanotubes
Mechanical properties
Metal-matrix composites
Nanocomposites

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10.1016/j.jallcom.2017.09.009

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title = "Fabrication and mechanical properties of CNTs/Mg composites prepared by combining friction stir processing and ultrasonic assisted extrusion",

abstract = "A novel process for preparing carbon nanotubes (CNTs) reinforced magnesium nanocomposites were developed, which combined friction stir processing (FSP) and ultrasonic assisted extrusion. A very good dispersion of CNTs in AZ91D alloy could be observed. It was demonstrated that the strength of Mg nanocomposites was remarkably enhanced. This was contributed to dislocation strengthening mechanism and stress transfer mechanism, not concerned with the grain refinement. Moreover, the composites maintained good ductility. The interfaces between CNTs and Mg matrix were well bonded, and the interfacial reaction product formation of Al2MgC2 was confirmed. A few edge dislocations were observed at CNTs-matrix boundaries by adding carbon nanotubes.",

keywords = "Carbon nanotubes, Mechanical properties, Metal-matrix composites, Nanocomposites",

author = "Junhao Liang and Hejun Li and Lehua Qi and Wenlong Tian and Xuefeng Li and Xujiang Chao and Jianfeng Wei",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.jallcom.2017.09.009",

language = "英语",

volume = "728",

pages = "282--288",

journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Fabrication and mechanical properties of CNTs/Mg composites prepared by combining friction stir processing and ultrasonic assisted extrusion

AU - Liang, Junhao

AU - Li, Hejun

AU - Qi, Lehua

AU - Tian, Wenlong

AU - Li, Xuefeng

AU - Chao, Xujiang

AU - Wei, Jianfeng

PY - 2017

Y1 - 2017

N2 - A novel process for preparing carbon nanotubes (CNTs) reinforced magnesium nanocomposites were developed, which combined friction stir processing (FSP) and ultrasonic assisted extrusion. A very good dispersion of CNTs in AZ91D alloy could be observed. It was demonstrated that the strength of Mg nanocomposites was remarkably enhanced. This was contributed to dislocation strengthening mechanism and stress transfer mechanism, not concerned with the grain refinement. Moreover, the composites maintained good ductility. The interfaces between CNTs and Mg matrix were well bonded, and the interfacial reaction product formation of Al2MgC2 was confirmed. A few edge dislocations were observed at CNTs-matrix boundaries by adding carbon nanotubes.

AB - A novel process for preparing carbon nanotubes (CNTs) reinforced magnesium nanocomposites were developed, which combined friction stir processing (FSP) and ultrasonic assisted extrusion. A very good dispersion of CNTs in AZ91D alloy could be observed. It was demonstrated that the strength of Mg nanocomposites was remarkably enhanced. This was contributed to dislocation strengthening mechanism and stress transfer mechanism, not concerned with the grain refinement. Moreover, the composites maintained good ductility. The interfaces between CNTs and Mg matrix were well bonded, and the interfacial reaction product formation of Al2MgC2 was confirmed. A few edge dislocations were observed at CNTs-matrix boundaries by adding carbon nanotubes.

KW - Carbon nanotubes

KW - Mechanical properties

KW - Metal-matrix composites

KW - Nanocomposites

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U2 - 10.1016/j.jallcom.2017.09.009

DO - 10.1016/j.jallcom.2017.09.009

M3 - 文章

AN - SCOPUS:85028746633

SN - 0925-8388

VL - 728

SP - 282

EP - 288

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Fabrication and mechanical properties of CNTs/Mg composites prepared by combining friction stir processing and ultrasonic assisted extrusion

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Keywords

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