Reinforcing effects of carbon nanotubes in structural aluminum matrix nanocomposites

2009 ◽  
Vol 24 (8) ◽  
pp. 2610-2616 ◽  
Author(s):  
Hyunjoo Choi ◽  
Jaehyuck Shin ◽  
Byungho Min ◽  
Junsik Park ◽  
Donghyun Bae
Keyword(s):  
Carbon Nanotubes ◽  
Aluminum Matrix ◽  
Milling Process ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Aluminum Powders ◽  
Reinforcing Effects ◽  
Thermomechanical Processes ◽  
Matrix Nanocomposites ◽  
Multiwalled Cnts

The reinforcing effects of carbon nanotubes (CNTs) are investigated for aluminum matrix composites. The composites present a strong bonding between CNTs and the aluminum matrix using a controlled mechanical milling process, producing a network structure of aluminum atoms around CNTs. At the same time, CNTs that are dispersed during the milling process can be located inside aluminum powders, thereby providing an easy consolidation route via thermomechanical processes. A composite containing 4.5 vol% multiwalled CNTs exhibits a yield strength of 620 MPa and fracture toughness of 61 MPa·mm1/2, the values of which are nearly 15 and seven times higher than those of the corresponding starting aluminum, respectively.

scholarly journals Wettability in Metal Matrix Composites

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1034
Author(s):  
Massoud Malaki ◽  
Alireza Fadaei Tehrani ◽  
Behzad Niroumand ◽  
Manoj Gupta
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Interfacial Strength ◽  
High Strength ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Metal Matrix Nanocomposites ◽  
Aerospace Applications ◽  
Matrix Nanocomposites

Metal matrix composites (MMCs) have been developed in response to the enormous demand for special industrial materials and structures for automotive and aerospace applications, wherein both high-strength and light weight are simultaneously required. The most common, inexpensive route to fabricate MMCs or metal matrix nanocomposites (MMNCs) is based on casting, wherein reinforcements like nanoceramics, -carbides, -nitrides, elements or carbon allotropes are added to molten metal matrices; however, most of the mentioned reinforcements, especially those with nanosized reinforcing particles, have usually poor wettability with serious drawbacks like particle agglomerations and therefore diminished mechanical strength is almost always expected. Many research efforts have been made to enhance the affinity between the mating surfaces. The aim in this paper is to critically review and comprehensively discuss those approaches/routes commonly employed to boost wetting conditions at reinforcement-matrix interfaces. Particular attention is paid to aluminum matrix composites owing to the interest in lightweight materials and the need to enhance the mechanical properties like strength, wear, or creep resistance. It is believed that effective treatment(s) may enormously affect the wetting and interfacial strength.

Reinforcement with intragranular dispersion of carbon nanotubes in aluminum matrix composites

2021 ◽  
pp. 108915
Author(s):  
Qibing Liu ◽  
Genlian Fan ◽  
Zhanqiu Tan ◽  
Qiang Guo ◽  
Dingbang Xiong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites

Tensile properties of carbon nanotubes reinforced aluminum matrix composites: A review

Carbon ◽  
2020 ◽  
Vol 160 ◽  
pp. 14-44 ◽  
Author(s):  
M. Jagannatham ◽  
Prathap Chandran ◽  
S. Sankaran ◽  
Prathap Haridoss ◽  
Niraj Nayan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Properties ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites
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