Experimental and Numerical Analysis of the 6061-Based Nanocomposites Fabricated via Ultrasonic Processing

Jia, Shiru; Zhang, Daojie; Nastac, Laurentiu

doi:10.1007/s11665-015-1467-4

Cited by 29 publications

(11 citation statements)

References 20 publications

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“…Some agglomeration of nanoparticles can be observed. This is in line with the experimental observations done via SEM and EDS analyses [25]. Table 2 shows the tensile test results for the as cast 6061 alloy and nanocomposites under different melt treatment conditions.…”

Section: Modeling Analysissupporting

confidence: 86%

“…The combination of these effects may be the reason that the tensile strength almost remains the same for 6061 samples. The increase in the elongation of the 6061 samples may be attributed to the slip mode transition produced by the presence of nanoparticles which depends on the matrix/nanoparticles interaction [6,25]. Table 3 shows the tensile test results for A356 alloy and nanocomposites under different treatment conditions.…”

Section: Modeling Analysismentioning

confidence: 99%

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EXPERIMENTAL AND MODELING ANALYSES OF Al- BASED NANOCOMPOSITES MANUFACTURED VIA MOLTEN-METAL AND SOLIDIFICATION PROCESSING ASSISTED BY ULTRASONIC STIRRING TECHNOLOGY

Jia¹,

Zhang²,

Nastac³

2018

ABM Proceedings

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Ultrasonic Stirring Technology (UST) is used in this study to manufacture Al-based nano-composites. Ultrasonic cavitation plays an important role in refining the microstructure, dispersing the nanoparticles and breaking up clusters of nanoparticles. In this paper, 6061/A356 alloys and Al2O3/SiC nanoparticles are used as the matrix alloys and the reinforcements, respectively. The nanoparticles were inserted into the molten alloy and dispersed by ultrasonic cavitation and acoustic streaming. A previously developed multiphase Computational Fluid Dynamics (CFD) model was used to study the cavitation and the nanodispersion phenomena during ultrasonic processing of these alloys. A comparison between the mechanical properties of the as-cast 6061 and 356 alloys and nano-composites has been performed.

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Section: Modeling Analysissupporting

confidence: 86%

Section: Modeling Analysismentioning

confidence: 99%

EXPERIMENTAL AND MODELING ANALYSES OF Al- BASED NANOCOMPOSITES MANUFACTURED VIA MOLTEN-METAL AND SOLIDIFICATION PROCESSING ASSISTED BY ULTRASONIC STIRRING TECHNOLOGY

Jia¹,

Zhang²,

Nastac³

2018

ABM Proceedings

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“…Thixoforming is a near-net-shape manufacturing process that is performed at temperatures between the solidus and the liquidus [1][2][3], with different recrystallization behavior from conventional process [4][5][6][7][8]. The most distinct characteristic of thixoformed microstructure is the co-existence of liquid and solid during processing (since this occurs at semi-solid temperatures), and the formation of a primary phase with near-spherical grain morphology [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Alloy development and reheating process exploration of Al–Si casting alloys with globular grains for thixoforming

Wang

Zhang²,

Phillion

et al. 2016

J. Mater. Res.

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A novel two-stage reheating process with new alloy design has been developed to improve the microstructure morphology of semi-solid Al-Si casting aluminum alloy for thixoforming. The process consists of first reheating the material to the liquidus temperature, holding for 5 minutes, and then lowering to the predetermined two-stage reheating temperature between 843 -863 K and holding for 10 minutes. The experimentally-obtained grain diameter, roundness, and the amount of liquid trapped within the solid phase were characterized, along with the microstructure obtained using the traditional feedstock reheating process. The Wilcox test (with α=0.05) was then applied to statistically analyze the measured differences in the microstructures obtained using the two different processing routes. It was found that a refined near-spherical structure with uniform globule size, higher sphericity, lower coarsening rate constant, and less entrapped liquid was obtained via the new two-stage reheating process in comparison with the microstructure obtained using the traditional feedstock reheating process.

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“…as Aluminum oxide (Al2O3), Silicon carbide (SiC), Boron Carbide (B4C) and Carbon nanotubes CNT [18][19][20][21][22], have demonstrated significant potential to develop composites with low density, enhanced mechanical strength and remarkable wear and abrasion resistances [20]. As a result, their processing has been extensively studied for aerospace, automobile and military defense applications [23].…”

Section: Significance Of Researchmentioning

confidence: 99%

“…The introduction of particles in the micron and nano scale to the aluminum matrix, such as Aluminum oxide (Al2O3), Silicon carbide (SiC), Boron Carbide (B4C) and Carbon nanotubes CNT [19][20][21][22], have demonstrated potential to develop metal matrix composites (MMC) with low density, enhanced mechanical strength and remarkable wear and abrasion resistances. [20].…”

Section: Addition and Dispersion Of Reinforcements Particles To Alumimentioning

confidence: 99%

Effect of Ultrasonic Treatment on the microstructure and mechanical properties of Al6061 and composite

Exime¹

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for all your guidance, help, support and friendship during the preparation of this thesis. For this past year and a half working in the PFL group, all of you have become more than coworkers for me, and I am so glad that I had the opportunity to meet all of you. Most importantly, I'd like to thank my family and friends that support me since the first day I came to FIU. I'm thankful to my parents for always supporting me and encouraging me to follow my dreams. My brother David and my sister Karla, who motivated me to pursue my master's degree. I would also like to thank to Nohelis Montano, Mauricio Trigo, Viviana Ojeda y Alberto Pernas our friendship has kept us together for years since we were in Venezuela, thanks for been here for me when I needed help and support.

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Experimental and Numerical Analysis of the 6061-Based Nanocomposites Fabricated via Ultrasonic Processing

Cited by 29 publications

References 20 publications

EXPERIMENTAL AND MODELING ANALYSES OF Al- BASED NANOCOMPOSITES MANUFACTURED VIA MOLTEN-METAL AND SOLIDIFICATION PROCESSING ASSISTED BY ULTRASONIC STIRRING TECHNOLOGY

EXPERIMENTAL AND MODELING ANALYSES OF Al- BASED NANOCOMPOSITES MANUFACTURED VIA MOLTEN-METAL AND SOLIDIFICATION PROCESSING ASSISTED BY ULTRASONIC STIRRING TECHNOLOGY

Alloy development and reheating process exploration of Al–Si casting alloys with globular grains for thixoforming

Effect of Ultrasonic Treatment on the microstructure and mechanical properties of Al6061 and composite

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