A Novel Method for Incorporation of Micron-Sized SiC Particles into Molten Pure Aluminum Utilizing a Co Coating

Mohammadpour, Mahdi; Khosroshahi, R. Azari; Mousavian, R. Taherzadeh; Brabazon, Dermot

doi:10.1007/s11663-014-0186-9

Cited by 29 publications

(19 citation statements)

References 31 publications

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“…The composite slurry was poured into the preheated low-carbon steel mold (at 450 °C). The schematic of the vortex-casting set-up was shown in detail in our previous study [4].…”

Section: Methodsmentioning

confidence: 99%

“…This is primarily due to their lightweight, low coefficient of thermal expansion (CTE), machinability, and improved mechanical properties, such as increased 0.2 % yield strength (YS), ultimate tensile strength (UTS), and hardness [1][2][3][4][5]. Due to these advantages, they are used in aerospace industries (airframe and aerospace components), automobile industries (engine pistons), and electronic components [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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A comparison study of applying metallic coating on SiC particles for manufacturing of cast aluminum matrix composites

Mousavian

Damadi

Khosroshahi

et al. 2015

Int J Adv Manuf Technol

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Ceramic particles typically do not have a sufficiently high wettability for incorporation into molten metal during aluminum matrix composite manufacturing. Metallic coatings on ceramic particles could improve their wettability by the molten aluminum and hence provide a better bonding between the reinforcement and matrix. In this study, micrometer-sized SiC particles were coated by copper, nickel, and cobalt metallic layers using electroless deposition method. These metallic layers were produced separately prior to ceramic incorporation into molten pure aluminum, in order to compare their effects on the microstructure and mechanical properties of the produced composites. The experimental results showed that copper was the most effective and nickel the least effective of these coating metals for incorporation of the SiC particles into the molten aluminum. It was additionally found that the composite, which contained the copper coated SiC particles, produced the highest microhardness and tensile strength, while that fabricated with the cobalt-coated SiC particles produced the lowest microhardness and tensile strength.

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“…The composite slurry was poured into the preheated low-carbon steel mold (at 450 °C). The schematic of the vortex-casting set-up was shown in detail in our previous study [4].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparison study of applying metallic coating on SiC particles for manufacturing of cast aluminum matrix composites

Mousavian

Damadi

Khosroshahi

et al. 2015

Int J Adv Manuf Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…This is primarily due to their lightweight, low coefficient of thermal expansion (CTE), machinability, and improved mechanical properties, such as increased 0.2% yield stress (YS), ultimate tensile stress (UTS), and hardness. Due to these advantages, they are used in aerospace industries (airframe and aerospace components), automobile industries (engine pistons), and electronic components [1][2][3][4][5][6][7][8][9][10][11].…”

Section: -Introductionmentioning

confidence: 99%

Stir casting process for manufacture of Al–SiC composites

et al. 2015

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Stir casting is an economical process for the fabrication of aluminum matrix composites. There are many parameters in this process, which affect the final microstructure and mechanical properties of the composites. In this study, micron-sized SiC particles were used as reinforcement to fabricate Al-3 wt% SiC composites at two casting temperatures (680 and 850 °C) and stirring periods (2 and 6 min). Factors of reaction at matrix/ ceramic interface, porosity, ceramic incorporation, and agglomeration of the particles were evaluated by scanning electron microscope (SEM) and high-resolution transition electron microscope (HRTEM) studies. From microstructural characterizations, it is concluded that the shorter stirring period is required for ceramic incorporation to achieve metal/ceramic bonding at the interface. The higher stirring temperature (850 °C) also leads to improved ceramic incorporation. In some cases, shrinkage porosity and intensive formation of Al4C3 at the metal/ceramic interface are also observed. Finally, the mechanical properties of the composites were evaluated, and their relation with the corresponding microstructure and processing parameters of the composites was discussed. AbstractStir casting is an economical process for fabricating aluminium matrix composites. There are

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“…Although high-strength aluminum alloys have been developed, the addition of alloying elements and microstructural modification, can be costly, contain toxic elements, and often results in properties, which only result in a slight increase in stiffness. The demands for lightweight, high-modulus, and highstrength materials have therefore led to the development of aluminum metal matrix composites (AMMCs) [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of rolled A356 based composites reinforced by Cu-coated bimodal ceramic particles

et al. 2015

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ab s t r a c tThree kinds of A356 based composites reinforced with 3 wt.% Al2O3 (average particle size: 170 lm), 3 wt.% SiC (average particle size: 15 lm), and 3 wt.% of mixed Al2O3-SiC powders (a novel composite with equal weights of reinforcement) were fabricated in this study via a two-step approach. This first process step was semi-solid stir casting, which was followed by rolling as the second process step. Electroless deposition of a copper coating onto the reinforcement was used to improve the wettability of the ceramic particles by the molten A356 alloy. From microstructural characterization, it was found that coarse alumina particles were most effective as obstacles for grain growth during solidification. The rolling process broke the otherwise present fine silicon platelets, which were mostly present around the Al2O3 particles. The rolling process was also found to cause fracture of silicon particles, improve the distribution of fine SiC particles, and eliminate porosity remaining after the first casting process step. Examination of the mechanical properties of the obtained composites revealed that samples which contained a bimodal ceramic reinforecment of fine SiC and coarse Al2O3 particles had the highest

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A Novel Method for Incorporation of Micron-Sized SiC Particles into Molten Pure Aluminum Utilizing a Co Coating

Cited by 29 publications

References 31 publications

A comparison study of applying metallic coating on SiC particles for manufacturing of cast aluminum matrix composites

A comparison study of applying metallic coating on SiC particles for manufacturing of cast aluminum matrix composites

Stir casting process for manufacture of Al–SiC composites

Mechanical properties of rolled A356 based composites reinforced by Cu-coated bimodal ceramic particles

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