Effect of Carbon Nanotubes as Reinforcement on the Mechanical Properties of Aluminum-Copper-Magnesium Alloy

Anas, N. S.; Dash, Raj Kishora; Rao, Tata N.; Vijay, R.

doi:10.1007/s11665-017-2730-7

Cited by 34 publications

(7 citation statements)

References 36 publications

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“…SEM and TEM reveal information about the material topography, its morphology and its composition. On the recent research conducted on the usage of AFM, SEM, and TEM for the research on CNTs, AFM method gives information about the length of CNTs and the diameter of their bundles, it was however not possible to observe the accurate value of the diameter due to CNTs did not lie directly on a mica and oscillated under the daze (N. S. Anas, 2017). SEM method was used to determine the accurate diameter of the CNTs bundles, it gives information mainly about surface morphology of the sample (et 'al A.…”

Section: Electron Microscopy Techniquementioning

confidence: 99%

Carbon Nanotubes: A Review of Synthesis and Characterization Methods/Techniques

Itas¹,

Ndikilar²,

Zangina³

2020

theijst

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Carbon Nanotubes: A Review of Synthesis and CharacterizationMethods/Techniques IntroductionWith the discovery of lower dimensional forms of carbon with unique mechanical properties in many areas of technology especially in nanotechnology (Popov V. , 2004), over the years until recent, the discovery was not made about nanostructure, particles and fibers and their applications are also not known. In 1991 carbon nanotubes were discovered by Iijima (Resel Das, Sharifah Bee Abd Hamid, 2015) and they have received much attention because of their usefulness in mechanical (

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Section: Electron Microscopy Techniquementioning

confidence: 99%

Carbon Nanotubes: A Review of Synthesis and Characterization Methods/Techniques

Itas¹,

Ndikilar²,

Zangina³

2020

theijst

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“…Generally, metals reinforced with carbon nanotubes have an increase in mechanical strength through different mechanisms. The main mechanisms discussed in the literature about CNT reinforcement are load transfer 39,40 , Orowan's mechanism 1,41 , and thermal expansion mismatch strengthening 9,42 . It is believed that these mechanisms act simultaneously, since neither single mechanism can explain the increase in the mechanical properties verified in these composites 42 .…”

Section: Resultsmentioning

confidence: 99%

“…It is believed that these mechanisms act simultaneously, since neither single mechanism can explain the increase in the mechanical properties verified in these composites 42 . The final strength of composites based in Al alloys reinforced with carbon nanotubes is the sum from contributions of the hardening by the solid solution of the matrix, hardening by precipitation, and the hardening mechanisms that involve the presence of carbon nanotubes 7,39,43 .…”

Section: Resultsmentioning

confidence: 99%

Processing of an AA7050/Al Hybrid Composites Reinforced with Multiwalled Carbon Nanotubes

et al. 2021

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The development of carbon nanotubes reinforced metal matrix composites merits relevant attention due to its capacity of improve the hardness and strength of the metal. However, the production of this kind of composite presents many challenges, such as the dispersion and adhesion of carbon nanotubes in the metallic matrix, wich may affect the composite consolidation. The present study aimed the development of composites using an age hardening aluminum alloy reinforced with 0.5 wt.% of multiwalled carbon nanotubes (MWCNT) as well as a hybrid composite based on the mixture of pure aluminum powder and the former composite. AA7050 alloy and pure aluminum matrix composites were processed by ultrasonic mixing, hot pressing and hot extrusion. Subsequently, the materials were submitted to aging heat treatments. The samples were analysed by Scanning Electron Microscopy, X-Ray Diffraction, Atomic Force Spectroscopy, Raman spectroscopy, and Vickers microhardness. It was verified the feasibility in manufacturing the composites by the powder metallurgy route proposed in this work. The AA7050 composite reinforced with 0.5 wt.% MWCNT presented higher hardness than other similar composites in the literature with higher carbon nanotubes content. The aged composite hardness increased 72% in comparison with the present one in the as extruded condition.

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“…The dominant mechanism of wear was found to be abrasion at minimal loads and delamination at elevated loads. Anas et al [17] blended fabricated Al, Cu, Mg and 0-2.5 wt% CNT powders in a high-energy ball mill and subsequently forged and hot extruded. With CNT inclusions, the milled powder particle size decreased; however, there is hardly any noticeable impact on crystallite size.…”

Section: Introductionmentioning

confidence: 99%

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

velmurugan

Mohan

2023

Mater. Res. Express

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In the current work, magnesium (AZ91D) matrix composites reinforced with different weight fractions (5, 10, and 15%) of titanium diboride (TiB2) and 1.5 wt.% percent carbon nanotubes (CNTs) are fabricated using stir casting. The improvements in mechanical, wear and corrosion resistance properties are evaluated as per ASTM guidelines. The synergistic strengthening effect of TiB2 and CNT is also studied. It was discovered that the AZ91D/(1.5CNT-10TiB2) composite outperformed other magnesium matrix composites in terms of strength and ductility. Experimental characterization and quantity analysis revealed that the load transfer process of CNT and thermal mismatch, grain refinement are the primary factors leading to the composite's increased tensile strength. Porosity tends to increase as a result of variance in thermal expansion coefficient of particles and matrix material, Orowan strengthening mechanism plays a prominent role towards enhancement of tensile strength. Because of the influence of synergistic strengthening, micro particles TiB2 increased the proportion of load transmission mechanisms and thermal mismatch facilitated the homogenous distribution of CNTs. Wear resistance and corrosion resistance increases with inclusion of CNTs and TiB2 content. Abrasive type wear mechanism is seen from the SEM image and the wear craters are also seen in all the SEM images, adding TiB2 considerably improves the cast composites resistance to corrosion because of grain refinement. Higher addition of TiB2 influences higher pitting corrosion due to poor grain refinement.

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Effect of Carbon Nanotubes as Reinforcement on the Mechanical Properties of Aluminum-Copper-Magnesium Alloy

Cited by 34 publications

References 36 publications

Carbon Nanotubes: A Review of Synthesis and Characterization Methods/Techniques

Carbon Nanotubes: A Review of Synthesis and Characterization Methods/Techniques

Processing of an AA7050/Al Hybrid Composites Reinforced with Multiwalled Carbon Nanotubes

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

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Effect of Carbon Nanotubes as Reinforcement on the Mechanical Properties of Aluminum-Copper-Magnesium Alloy

Cited by 34 publications

References 36 publications

Carbon Nanotubes: A Review of Synthesis and Characterization Methods/Techniques

Carbon Nanotubes: A Review of Synthesis and Characterization Methods/Techniques

Processing of an AA7050/Al Hybrid Composites Reinforced with Multiwalled Carbon Nanotubes

Characterization and strengthening mechanism of CNT/TiB2 particulates added AZ91D composites

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Product

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Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites