On the Electrical and Thermal Conductivities of Cast A356/Al&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;O&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt; Metal Matrix Nanocomposites

E.Y.El-Kady,; Mahmoud, T. S.; Ali, Ali

doi:10.4236/msa.2011.29159

Cited by 6 publications

(4 citation statements)

References 15 publications

(16 reference statements)

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“…A356/Al 2 O 3 MMnCs were produced by using a combination of rheocasting and squeeze casting techniques [68]. Rheocasting is a semi-solid phase process, which has several advantages: it is performed at lower temperatures than those conventionally employed in foundry practice, resulting in reduced thermochemical degradation of the reinforcement surface.…”

Section: Semi-solid Processesmentioning

confidence: 99%

Metal Matrix Composites Reinforced by Nano-Particles—A Review

Casati

Vedani

2014

Metals

846

317

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Metal matrix composites reinforced by nano-particles are very promising materials, suitable for a large number of applications. These composites consist of a metal matrix filled with nano-particles featuring physical and mechanical properties very different from those of the matrix. The nano-particles can improve the base material in terms of wear resistance, damping properties and mechanical strength. Different kinds of metals, predominantly Al, Mg and Cu, have been employed for the production of composites reinforced by nano-ceramic particles such as carbides, nitrides, oxides as well as carbon nanotubes. The main issue of concern for the synthesis of these materials consists in the low wettability of the reinforcement phase by the molten metal, which does not allow the synthesis by conventional casting methods. Several alternative routes have been presented in literature for the production of nano-composites. This work is aimed at reviewing the most important manufacturing techniques used for the synthesis of bulk metal matrix nanocomposites. Moreover, the strengthening mechanisms responsible for the improvement of mechanical properties of nano-reinforced metal matrix composites have been reviewed and the main potential applications of this new class of materials are envisaged.

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Section: Semi-solid Processesmentioning

confidence: 99%

Metal Matrix Composites Reinforced by Nano-Particles—A Review

Casati

Vedani

2014

Metals

846

317

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“…Hal ini terjadi karena bertambahnya diameter impeler pengaduk akan mengakibatkan pusaran menjadi lebih besar yang berpotensi menarik gas ke dalam lelehan serta mengakibatkan gas tersebut terjebak di dalam lelehan komposit. Gas yang terjebak ke dalam lelehan komposit akan menjadi porositas dalam komposit, yang mana porositas akan menurunkan nilai mekanis [15].…”

Section: Pengujian Densitas Dan Porositasunclassified

Untitled

Andryanto¹,

Triyono²,

Wijayanta³

2020

JTMI

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Perkembangan sains dan teknologi di dunia industri, khususnya manufaktur di Indonesia saat ini membutuhkan jenis material terbaru. Aluminium matrix composite (AMC) adalah salah satu dari banyak jenis teknologi metode komposit yang digunakan. Pada stir casting, ukuran dari impeler pengaduk adalah salah satu parameter yang mempengaruhi hasil dari pengecoran. Kajian ini bertujuan untuk menentukan pengaruh dari ukuran impeler pengaduk pada kekerasan, kekuatan bending dan densitas dari komposit. Proses pembuatan aluminium matrix composite menggunakan metode stir casting dengan variasi pada ukuran impeler pengaduk yakni 90, 100 dan 110 mm. Kecepatan pengadukan yakni 400 rpm selama 5 menit pada suhu semi-solid. Fraksi volume dari pasir silika yang digunakan adalah 9% dan penambahan Magnesium dengan fraksi volume sebesar 2,5% dan 725 o C untuk suhu pengecoran. Semakin besar ukuran impeler pengaduk akan menyebabkan penguatan partikel terpusatkan di tengah dan menggumpal di bawah pengaduk. Gumpalan tersebut menyebabkan penguatan partikel tidak terdistribusi secara merata, sehingga kekuatan mekanik akan berkurang. Nilai tertinggi didapatkan pada uji kekerasan, bending dan densitas pada ukuran impeler pengaduk sebesar 90 mm (90,87 HBN,

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“…Al alloy reinforced with particulates composites are achieving great importance due to their low cost, isotropic in nature and useful for secondary processing [13]. Al Metal Matrix Nano Composites (AMMNCs) reinforced by nano scale particulates are widely used in industry such as automotive and aerospace [14].…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Nanoparticle Metal Matrix Composites: (Al 2024-SiC NP)

Chaudhry¹,

Ali²,

Ghauri³

2018

IJRN

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Composite materials get an importance in value as an advance materials such as automotive, aerospace, aircraft, defense, medical, marine, sports, recreation and various engineering applications due to their high strength-to-weight ratio, good cast ability and better tribological properties. Al-base 2024 alloy reinforced with SiC micron and nano particles were developed using stir casting technique due to low cast, ease in fabrication, recyclability and isotropic characteristics. The development of Aluminum metal matrix nano composites (AMMNCs) is most considered material for high temperature applications because of their excellent mechanical properties, increase performance and weight saving for more reduction of fuel consumption. The results indicate that Al-SiC composite has improved physical and mechanical properties such as tensile strength, charpy impact strength, brinell hardness, density and porosity percentage. Samples with micron par ticles and nano par ticles were developed to compare the properties of both. Microstructures of the samples were studied by means of X-Ray Diffraction and Scanning Electron Microscopy. The elemental composition was also analyzed through Energy Dispersive Spectroscopy. It was found that composites of Al-SiC have better and improved physical properties in nano dimensions.

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On the Electrical and Thermal Conductivities of Cast A356/Al<sub>2</sub>O<sub>3</sub> Metal Matrix Nanocomposites

Cited by 6 publications

References 15 publications

Metal Matrix Composites Reinforced by Nano-Particles—A Review

Metal Matrix Composites Reinforced by Nano-Particles—A Review

Untitled

Development and Characterization of Nanoparticle Metal Matrix Composites: (Al 2024-SiC NP)

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