Carbon nanotube-reinforced aluminum composite produced by induction melting

Mansoor, Muhammad Adil; Shahid, Muhammad

doi:10.1016/j.jart.2016.05.002

Cited by 94 publications

(29 citation statements)

References 27 publications

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“…Because of the extraordinary physical and chemical properties of SWNT, reinforcement of Al-alloys with this type of material leads to huge changes in its properties like greater strength, improved stiffness, reduced density, improved high temperature properties, improved abrasion and wear resistance [5,6].…”

Section: Introductionmentioning

confidence: 99%

Free vibration of functionally graded SWNT reinforced aluminum alloy beam

Selmi¹,

Bisharat²

2018

J. vibroeng.

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Abstract. Aluminum alloy (Al-alloy) reinforced with Single walled carbon nanotubes (SWNT), which represents an important industrial application, is studied. Different beam theories (BT) are applied to investigate functionally graded (FG) beams made of Al-alloy reinforced with randomly oriented, straight and long SWNT. The Rayleigh-Ritz method is used to estimate the beam frequencies. First, the Mori-Tanak (M-T) homogenization technique is used to predict the effective material properties of the beams. Second, results from BT are verified against finite element (FE) simulations. Next, a parametric study is carried out in order to investigate the influence of SWNT volume fractions, SWNT distributions and beam edge-to-thickness ratios on the vibration behavior of the FG beam. Results demonstrate the important effect of the studied parameters on the dynamic behavior of the FG SWNT reinforced Al-alloy composite beams.

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Section: Introductionmentioning

confidence: 99%

Free vibration of functionally graded SWNT reinforced aluminum alloy beam

Selmi¹,

Bisharat²

2018

J. vibroeng.

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“…Among these, the CNTs stand out for their extraordinary properties, making them highly attractive for use as reinforcements. CNTs have been used to reinforce several metallic matrices, such as aluminum [6,7], nickel [8,9], copper [10,11], titanium [12] and magnesium [13,14], due to their extraordinary mechanical properties and excellent electrical conductivity [15,16].…”

Section: Introductionmentioning

confidence: 99%

Aluminum and Nickel Matrix Composites Reinforced by CNTs: Dispersion/Mixture by Ultrasonication

Simões

Viana

Reis

et al. 2017

Metals

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The main challenge in the production of metal matrix composites reinforced by carbon nanotubes (CNTs) is the development of a manufacturing process ensuring the dispersion of nanoparticles without damaging them, and the formation of a strong bond with the metallic matrix to achieve an effective load transfer, so that the maximum reinforcement effect of CNTs will be accomplished. This research focuses on the production by powder metallurgy of aluminum and nickel matrix composites reinforced by CNTs, using ultrasonication as the dispersion and mixture process. Microstructural characterization of nanocomposites was performed by optical microscopy (OM), scanning and transmission electron microscopy (SEM and TEM), electron backscattered diffraction (EBSD) and high-resolution transmission electron microscopy (HRTEM). Microstructural characterization revealed that the use of ultrasonication as the dispersion and mixture process in the production of Al/CNT and Ni/CNT nanocomposites promoted the dispersion and embedding of individual CNT in the metallic matrices. CNT clusters at grain boundary junctions were also observed. The strengthening effect of the CNTs is shown by the increase in hardness for all nanocomposites. The highest hardness values were observed for Al/CNT and Ni/CNT nanocomposites, with a 1.00 vol % CNTs.

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“…Compressive strength of nano-composites found a maximum value of 810 MPa at 2 vol.% MWCNTs addition which is 78%, 34% and 12% greater than that for Al2024-O, Al2024-T6 and nanostructured Al2024 respectively [9]. Induction melting, a distinct approach to facilitate the dispersion of CNTs in molten aluminum which gives refinement in crystallite size (320 nm) and increase in lattice strain (3.24 × 10 −3 ) and simultaneous increase in yield strength (77%), tensile strength (52%), ductility(44%) and hardness (45%) was observed [10]. Nano indentation testing on the composite with dispersed MWCNTs indicated an increase in Young's modulus by 21% and 22% and an increase in the nano hardness by 43% and 54% by the addition of 1 wt% and 2 wt% copper coated MWCNTs respectively [11].…”

Section: Introductionmentioning

confidence: 92%

Investigation of flexural and impact strength of carbon nanotube reinforced AA7075 metal matrix

Rao¹,

Kumar²,

Kumar³

et al. 2018

IJET

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Metal matrix nano-composites are grabbing more attention by many researchers in the recent years as they exhibit outstanding properties when compared to pure metal alloys. In the present study Aluminium Alloy 7075 was selected as the matrix and carbon nanotubes was selected as reinforcing element to investigate the percentage enhancement of flexural strength and impact strength of metal matrix composite. Stir casting process was selected to fabricate the specimens. The multi walled carbon nanotubes with different weight percentages (0.5, 1.0, 2.0, 5.0 wt %) were selected to prepare the AA7075-CNT metal matrix composite. Microstructure and dispersion of CNT was examined using Scanning Electron Microscope (SEM) with EDX. The experimental results of mechanical tests showed that if the MWCNTs particle content increases considerably flexural strength and impact strength also increases about 125% and 90% respectively. Thus the AA7075-CNT metal matrix can be used in automobile and aerospace applications under high load conditions.

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Carbon nanotube-reinforced aluminum composite produced by induction melting

Cited by 94 publications

References 27 publications

Free vibration of functionally graded SWNT reinforced aluminum alloy beam

Free vibration of functionally graded SWNT reinforced aluminum alloy beam

Aluminum and Nickel Matrix Composites Reinforced by CNTs: Dispersion/Mixture by Ultrasonication

Investigation of flexural and impact strength of carbon nanotube reinforced AA7075 metal matrix

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