On the role of nano-size SiC on lattice strain and grain size of Al/SiC nanocomposite

Saberi, Yasaman; Zebarjad, Seyed Mojtaba; Akbari, G. H.

doi:10.1016/j.jallcom.2009.05.009

Cited by 96 publications

(41 citation statements)

References 28 publications

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“…These include agglomeration of the nano-size reinforcement in the matrix [10][11][12], grain growth of the matrix [13,14], poor interfacial bonding [9,13], and high cost [9]. Liquid-state processing techniques suffer from the poor wettability of the reinforcement with the liquid matrix [15][16][17][18][19]. In addition, they may lead to the formation of unwanted and brittle phases like Al4C3 and Si, in the case of Al-SiC composites [16,20], due to processing at relatively high temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Liquid-state processing techniques suffer from the poor wettability of the reinforcement with the liquid matrix [15][16][17][18][19]. In addition, they may lead to the formation of unwanted and brittle phases like Al4C3 and Si, in the case of Al-SiC composites [16,20], due to processing at relatively high temperatures. However, solid-state processing techniques have been proven to be effective in overcoming most of the challenges associated with processing MMNCs.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Properties of Spark Plasma Sintered Aluminum Containing 1 wt.% SiC Nanoparticles

Aliyu

Saheb²,

Hassan³

et al. 2015

Metals

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Abstract:The low hardness and strength of aluminum, which limits its use in many industrial applications, could be increased through the addition of nanoparticles. However, the appropriate processing method and parameters should be carefully selected in order to achieve the desired improvement in properties. In this work, aluminum was reinforced with low weight fraction (1 wt.%) of SiC nanoparticles and consolidated through spark plasma sintering. The effect of processing parameters on the densification, microstructure, and properties of the processed material was investigated. Field Emission Scanning Electron Microscope (FE-SEM) equipped with Energy Dispersive X-ray Spectroscopy (EDS) facility was used to characterize the microstructure and analyze the reinforcement's distribution in sintered samples. Phases present were characterized through X-ray diffraction (XRD). A densimeter and a digital microhardness tester were used to measure the density and hardness, respectively. Compressive tests were performed using universal testing machine. A fully dense Al-1 wt.% SiC sample was obtained. Analysis of density and hardness values showed that the influence of applied pressure was more pronounced than heating rate while the influence of sintering temperature was more significant than sintering time. Within the range of parameters used, the highest values of the characterized properties were obtained at a sintering temperature of 600 °C, sintering time of 10 min, pressure of 50 MPa, and heating rate of 200 °C/min. OPEN ACCESSMetals 2015, 5 71

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Spark Plasma Sintered Aluminum Containing 1 wt.% SiC Nanoparticles

Aliyu

Saheb²,

Hassan³

et al. 2015

Metals

View full text Add to dashboard Cite

show abstract

“…Samples were then subjected to a sintering process at 450°C under argon atmosphere for 2 h which was the optimized condition [4][5][6][7][8][9][10] and consequently samples with approximately 95 % density were achieved. The Vickers microhardness was measured through applying 50 g force.…”

Section: Methodsmentioning

confidence: 99%

“…The trend of particle size of the nanocomposite was descending where 20 lm initial particles refined into particles with average size of about 8 lm after milling for 25 h. Meanwhile, crystallite size of the composite fell substantially from 155 nm to 15 nm, whereas the trend of microstrain was totally different and it was increasing as it could be expected. In another investigation [10], high energy ball mill was implemented to produce aluminum (Al) matrix composite powders reinforced with silicon carbide (SiC). To clarify the role of particle size of SiC on lattice strain and grain size, Al two series of SiC with micron and nano-size were selected.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of milling period and the percentage of the reinforcing agent on morphology, particle size, crystallite size, lattice strain and microhardness of the final composites were studied. In comparison with other studies in this field [8][9][10], may this work considers: the addition of wide variety of percentages of SiC, 5 different proportions from 2.5 to 20 wt.%, into Al, detailed investigation of microstructural changes of Al matrix as a result of SiC introduction particularly in the case of crystallite size, the explanation of Hall-Petch and Inverse Hall-Petch effects in different samples.…”

Section: Introductionmentioning

confidence: 99%

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Role of Different Fractions of Nano-size SiC and Milling Time on the Microstructure and Mechanical Properties of Al–SiC Nanocomposites

Pakseresht

Baghbaderani

Yazdani-Rad

2015

Trans Indian Inst Met

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High energy ball milling was implemented to produce Al-matrix composites reinforced with 2.5, 5, 10, 15 and 20 wt% silicon carbide (SiC) nano-particles. In this regard, Scanning electron microscopy, X-ray diffraction and microhardness tests were applied to clarify the role of milling time and the percentage of nanometric SiC on structural evolutions and mechanical properties of the composites. An increase in the SiC proportion resulted in accelerating the milling process, leading to faster work hardening rate and fracture of the aluminum matrix. Thus, the crystallite size of Al in Al-20wt.%SiC composite reached a low of 20 nm after milling for 25 h and the microstrain trend experienced higher increasing rate in composites with higher amounts of SiC. Similarly, as a result of the rise in SiC percentage, there was a growth in the microhardness of composites. This phenomenon was mainly attributed to grain refinement, explained by HallPetch equation. On the other hand, inverse Hall-Petch behavior was observed for a ultra fine-grain sample, Al20wt.%SiC milled for 25 h.

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Improving compressibility and thermal properties of Al–Al2O3 nanocomposites using Mg particles

Wagih

Fathy

2018

J Mater Sci

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On the role of nano-size SiC on lattice strain and grain size of Al/SiC nanocomposite

Cited by 96 publications

References 28 publications

Microstructure and Properties of Spark Plasma Sintered Aluminum Containing 1 wt.% SiC Nanoparticles

Microstructure and Properties of Spark Plasma Sintered Aluminum Containing 1 wt.% SiC Nanoparticles

Role of Different Fractions of Nano-size SiC and Milling Time on the Microstructure and Mechanical Properties of Al–SiC Nanocomposites

Improving compressibility and thermal properties of Al–Al2O3 nanocomposites using Mg particles

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