Investigating the effect of SiC particles on the physical and thermal properties of Al6061/SiCp composite

Zare, Reza; Sharifi, Hassan; Saeri, M.R.; Tayebi, Morteza

doi:10.1016/j.jallcom.2019.05.317

Cited by 72 publications

(19 citation statements)

References 23 publications

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“…The thermal studies on the cermets were highly dependent of fabrication techniques and ceramic reinforcement. Various research has been carried out around the thermal conductivity and expansion coefficient studies and typically the incorporation of SiC or ceramic based reinforcement led to decrease in conductivity and expansion coefficient due to high thermal stability of ceramics [40] . The results of thermal studies are plotted in Fig.…”

Section: Resultsmentioning

confidence: 99%

Development of high-performance aluminium 6061/SiC nanocomposites by ultrasonic aided rheo-squeeze casting method

Arunkumar

Selvakumaran

Subbiah³

et al. 2021

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

Development of high-performance aluminium 6061/SiC nanocomposites by ultrasonic aided rheo-squeeze casting method

Arunkumar

Selvakumaran

Subbiah³

et al. 2021

Ultrasonics Sonochemistry

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“…Powder metallurgy is one of the earliest solid forming methods for preparing particle reinforced aluminum matrix composites, and the process is relatively mature [ 19 , 20 , 21 ]. However, the research on particle reinforced aluminum matrix composites with rare earth mostly focuses on the preparation of composites by the liquid phase method.…”

Section: Introductionmentioning

confidence: 99%

Effect of CeO2 Content on Microstructure and Properties of SiCp/Al-Si Composites Prepared by Powder Metallurgy

et al. 2021

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The effect of CeO2 content on the microstructure and properties of SiCp/Al-Si composites prepared by powder metallurgy was studied, and the mechanism of CeO2 in composites was deeply analyzed. The results show that the addition of the appropriate amount of CeO2 can refine the Si particles and improve the tensile properties of the SiCp/Al-Si composites. As the CeO2 content increases from 0 to 0.4 vol%, the particle size of the Si phase shows a tendency to decrease first and then increase, while the tensile strength, yield strength, and elongation of the composites show a trend of first increasing and then decreasing. When the CeO2 content is 0.2 vol%, the refining effect of CeO2 and the tensile properties of composites are the best. The fracture mode of SiCp/Al-Si composites with a rare earth addition is a mixed fracture. There are three main mechanisms for CeO2 in SiCp/Al-Si composites. One is when CeO2 serves as the nucleation substrate of Si phase to refine Si particles. The second is when CeO2 reacts with the alloying elements in the aluminum matrix to form a new phase, CeCu2Si2, which can not only play a role of dispersion strengthening, but also improve the bonding strength between Al matrix and Si particles. The third is the pinning effect of CeO2 and CeCu2Si2 particles on grain boundaries or phase boundaries to refine aluminum grains.

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“…Due to the advantages of low density, high specific strength, low thermal expansion coefficient, good thermal conductivity and high wear resistance, SiC particle reinforced Al-Si matrix composite (SiCp/Al-Si composite) has been widely used in aerospace applications, electronic instruments, military equipment, wear-resistant materials and many other fields [ 8 , 9 , 10 , 11 , 12 ]. SiCp/Al-Si composites prepared by powder metallurgy usually have the following advantages: the distribution of the reinforcement phase is uniform, the content is easy to adjust, the proportion of each component is accurate and there is no obvious agglomeration [ 13 , 14 ]. In addition, due to the low temperature used in the preparation process, the composites are generally in solid or partial melting state, so the interfacial reaction between matrix and reinforcement is very weak, which reduces the formation of interface impurities and brittle phases [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of CeO2 on the Si Precipitation Mechanism of SiCp/Al-Si Composite Prepared by Powder Metallurgy

et al. 2020

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SiCp/Al-Si composites with different CeO2 contents were prepared by a powder metallurgy method. The effect of CeO2 content on the microstructure of the composites was studied. The mechanism of CeO2 on the precipitation of Si during sintering was analyzed by theoretical calculations. The results show that the appropriate amount of CeO2 can significantly refine the size of precipitated Si particles in the composite and increase the number of Si particles. With the increase of CeO2 content from 0 to 0.6 wt%, the number of Si particles precipitated in the composites increases gradually, and the average particle size of Si particles decreases gradually. When the CeO2 content is 0.6 wt%, the number of Si particles precipitated in the composites reaches the maximum, and the average particle size reaches the minimum. However, with the increase of CeO2 content from 0.6 wt% to 1.8 wt%, the number of Si particles precipitated in the composites began to decrease, and the average size of Si particles gradually increased. CeO2 can be used as heterogeneous nucleation substrate of precipitated Si, and the nucleation rate of precipitated Si on a CeO2 substrate is higher than that on an aluminum substrate. The proper addition of CeO2 can improve the nucleation efficiency of precipitated Si, thus increasing the amount and refining the size of precipitated Si.

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Investigating the effect of SiC particles on the physical and thermal properties of Al6061/SiCp composite

Cited by 72 publications

References 23 publications

Development of high-performance aluminium 6061/SiC nanocomposites by ultrasonic aided rheo-squeeze casting method

Development of high-performance aluminium 6061/SiC nanocomposites by ultrasonic aided rheo-squeeze casting method

Effect of CeO2 Content on Microstructure and Properties of SiCp/Al-Si Composites Prepared by Powder Metallurgy

Effects of CeO2 on the Si Precipitation Mechanism of SiCp/Al-Si Composite Prepared by Powder Metallurgy

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