Preparation of SiC Nano-particulates Reinforced Aluminum Matrix Nanocomposites by High Intensity Ultrasonic Cavitation Process

Lakshmanan, Poovazhagan; Kalaichelvan, K.; Rajadurai, A.

doi:10.1007/s12666-013-0340-0

Cited by 26 publications

(5 citation statements)

References 13 publications

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“…It could be improved by employing MA methods with better dispersion of ceramic nano-fillers with significant grain size reduction [218,219]. In addition, the densification of MA is mainly [216,222] although some improvements of ductility could be seen when using Mg-based matrices [223,224] without sufficient explanation. The role of ceramic nano-fillers on hindering the matrix dislocations and the effect of grain size reduction have discussed in most relevant researches that were the main reasons for hardness increments [216,222,223,[225][226][227][228].…”

Section: Ceramic Based Nanocompositesmentioning

confidence: 99%

A Review on Nanocomposites. Part 1: Mechanical Properties

Liu

Khaliq

Huo

et al. 2020

Journal of Manufacturing Science and Engineering

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Micromachining of nanocomposites is deemed to be a complicated process due to the anisotropic, heterogeneous structure, and advanced mechanical properties of these materials associated with the size effects in micromachining. It leads to poorer machinability in terms of high cutting force, low surface quality, and high rate of tool wear. In part 1 of this two-part review paper, a comprehensive review on mechanical properties of various nanocomposites will be presented while the second part of the paper will focus on the micro-machinability of these nanocomposite materials.

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Section: Ceramic Based Nanocompositesmentioning

confidence: 99%

A Review on Nanocomposites. Part 1: Mechanical Properties

Liu

Khaliq

Huo

et al. 2020

Journal of Manufacturing Science and Engineering

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“…800 grams of aluminum was melted in the furnace at 680 o C and choked for about 10 minutes [20]. Initially, alloy melt was mechanically stirred to obtain the homogenous mixture and then, B 4 C nanoparticles were slowly added in the molten material from the top.…”

Section: Methodsmentioning

confidence: 99%

Processing and Performance Characteristics of Aluminum-Nano Boron Carbide Metal Matrix Nanocomposites

Lakshmanan¹,

Kalaichelvan

Sornakumar³

2015

Materials and Manufacturing Processes

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In this research work, ultrasonic cavitation assisted casting process was used to fabricate the aluminum alloy-nano boron carbide metal matrix nanocomposites. The optical microscopy results revealed the refined matrix grains in the microstructure of the aluminum alloy-nano boron carbide composites. Boron carbide nanoparticles were uniformly distributed in the aluminum alloy matrix, which can be confirmed by scanning electron microscopic images. The aluminum alloy-nano boron carbide composites show increased dislocation density, compared to the monolithic alloys, which was observed from the transmission electron microscopic images. The addition of nano boron carbide in aluminum alloy matrix, significantly improved its hardness and tensile strength, while the good ductility and impact resistance of the aluminum alloy was almost retained. The results of the dry sliding wear pin-on-disc tests showed improved wear resistance properties of aluminum alloy-nano boron carbide composites compared to the monolithic aluminum alloys.

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“…This effect can be primarily explained by the considerable variation in the density between the matrix and nanosized particulates, and the notably higher specific surface area of the nanosized reinforcing particulates. As a result, there is insufficient wettability between the matrix alloy and nanosized particulate reinforcement [19]. Therefore, a considerable number of researchers have adopted the use of stir-casting in conjunction with the ultrasonic cavitation approach.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Maddaiah,

Kumar,

Pramod

2024

J. Compos. Sci.

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Stir-casting with ultrasonic cavitation produced nano-Al2O3-filled AA7150 matrix composites in this study. The SEM microstructure study shows that all composites include nano-Al2O3 particles with consistent particle sizes and homogenous distribution. EDS and XRD showed no secondary phases or impurities in the composite. Optical microscopy showed intense ultrasonic cavitation effects, and nano-Al2O3 particles caused grain refinement in the AA7150 matrix. The composite’s mechanical characteristics improved when the Al2O3 nanoparticle weight percentage (wt.%) increased. With only 2.0 wt.% nano-Al2O3 particles, the composites yielded 232 MPa, 97.52% higher than the sonicated AA7150 matrix alloy. Multiple models were used to characterize the strength of the AA7150 nano-Al2O3 composite. The findings showed that thermal incongruity, Orowan strengthening, the Hall–Petch mechanism, and load transfer effects contributed the most towards the increased strength of the composite. Increasing the nano-Al2O3 wt.% in the AA7150 matrix improved hardness by 95.08%, yield strength by 90.34%, and sliding wear resistance by 46.52%. This enhancement may be attributed to the combined effects of better grain refinement, enhanced dispersion with dislocation strengthening, and better load transfer between the matrix and reinforcement, which are assisted by the inclusion of reinforcements. This result was confirmed by optical studies.

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Preparation of SiC Nano-particulates Reinforced Aluminum Matrix Nanocomposites by High Intensity Ultrasonic Cavitation Process

Cited by 26 publications

References 13 publications

A Review on Nanocomposites. Part 1: Mechanical Properties

A Review on Nanocomposites. Part 1: Mechanical Properties

Processing and Performance Characteristics of Aluminum-Nano Boron Carbide Metal Matrix Nanocomposites

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

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