Remarkable improvement of mechanical properties of layered CNTs/Al composites with Cu decorated on CNTs

Chen, Junfeng; Yan, Laixing; Liang, Siyan; Cui, Xiping; Liu, Chaonong; Wang, Bingshu; Zou, Linchi

doi:10.1016/j.jallcom.2021.163404

Cited by 32 publications

(8 citation statements)

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“…The authors referred to an increase of 66% in tensile strength and a decrease from 15.8 to 8.8% in elongation for Al/CNT with 3.00 vol.% of CNT. On the other hand, Chen et al [8] showed that a copper particle could contribute to increasing the ductility of Al/CNT. These nanocomposites produced by spark plasma sintering (SPS) and hot rolling exhibited an increase of 54% in tensile strength but decreased from 9.6 to 6.8% in elongation.…”

Section: Mechanical Properties Of the Nanocomposites And Aluminum Matrixmentioning

confidence: 99%

“…Carbon nanotubes, mainly due to their mechanical properties, could be the ideal reinforcement material for these nanocomposites. In this sense, aluminum nanocomposites reinforced by carbon nanotubes (Al/CNT) may have the advantage of being potential candidates for lightweight components with high mechanical strength even when only a small amount of CNTs are added [3][4][5][6][7][8][9][10][11]. However, some challenges in producing these nanocomposites must be overcome to obtain properties close to potential ones.…”

Section: Introductionmentioning

confidence: 99%

“…However, in the case of poor dispersion of the CNTs, an increase in the fraction can also decrease the elastic modulus due to the formation of large CNT clusters. Due to CNT agglomeration and a reduced load transfer, the stiffness increase rate decreases as CNT content increases [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In this context, some published works investigate the mechanical properties of Al/CNTs nanocomposites produced by different processes and with different fractions of CNTs [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Chen et al [8] developed a new approach to improve the interfacial bonding of Al and CNT to enhance the mechanical properties of the nanocomposites. The authors produced the nanocomposites with CNTs with Cu nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Mechanical Properties of Al/CNT Nanocomposites Produced by Powder Metallurgy

Carneiro

Simões

2022

Applied Sciences

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Demanding requirements in automotive and aerospace applications promote the growing need to obtain materials and advanced technology capable of combining low weight with high mechanical properties. Aluminum matrix nanocomposites could be great candidates to respond to such needs. In this sense, this investigation aims to study the mechanical properties of nanocomposites of aluminum matrices reinforced with carbon nanotubes (CNTs). The nanocomposites were produced by powder metallurgy with 1.00 vol.% of reinforcement and ultrasonication as the dispersion method. Tensile, Vickers microhardness and nanoindentation tests were carried out in different sections. Microstructural characterizations were conducted in scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD) to understand and relate to the mechanical properties. An increase in the yield strength of 185% was observed for the nanocomposites, which can be attributed to the load transfer mechanism. However, the CNTs observed at the grain boundaries promote a decrease in the ductility of the nanocomposites. The mechanical behavior of the nanocomposites was further investigated by EBSD observation. The results revealed that the nanocomposites have a less extensive area of plastic deformation than the Al matrix, which is consistent with the tensile results. The presence of reinforcement affects the lattice rotation during the tensile test and the active slip systems, thus affecting their deformation behavior.

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Section: Mechanical Properties Of the Nanocomposites And Aluminum Matrixmentioning

confidence: 99%