Effect of high-pressure torsion on the microstructure and strengthening mechanisms of hot-consolidated Cu–CNT nanocomposite

Akbarpour, M.R.; Farvizi, M.; Lee, D.J.; Rezaei, Hassan; Kim, H.S.

doi:10.1016/j.msea.2015.04.085

Cited by 45 publications

(14 citation statements)

References 25 publications

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“…Several reports are now available on the processing of MMCs by HPT [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. For example, Al-6061 MMCs were processed by HPT at room temperature under a pressure of 5.0 GPa with two different sets of reinforcement particles (20 vol.% Al 2 O 3 or 10 vol.% SiC) [20].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and microhardness of an Al-6061 metal matrix composite processed by high-pressure torsion

Alhajeri

Al‐Fadhalah

Almazrouee

et al. 2016

Materials Characterization

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Disks of an Al-6061 metal matrix composite, reinforced with 10 vol.% Al 2 O 3 particles, were processed by high-pressure torsion (HPT) at room temperature for 1/4, 1/2, 1, 5 and 10 turns under an applied pressure of 6.0 GPa. The evolution of microstructure was investigated using optical microscopy and scanning electron microscopy. During HPT processing the average grain size within the aluminum matrix decreased from ∼35 μm in the unprocessed condition to ∼ 170 nm after processing through 10 turns but there was no significant effect on the size and distribution of the alumina particulate clusters. The values of the Vickers microhardness were recorded across the surface of each disk and then plotted as two-dimensional and threedimensional color-coded contour maps. The results show the hardness increases from ∼56 Hv in the initial condition to ∼165 Hv after HPT for 10 turns. The results demonstrate that, as in many unreinforced metallic alloys, the evolution of hardness with strain exhibits strain hardening without any significant recovery.

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Section: Introductionmentioning

confidence: 99%

Microstructure and microhardness of an Al-6061 metal matrix composite processed by high-pressure torsion

Alhajeri

Al‐Fadhalah

Almazrouee

et al. 2016

Materials Characterization

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“…Using low energy ball milling, this unwanted effect can be reduced, but it will not vanish. The importance of a low defect density of CNTs will be discussed later on in entry 2.2 [8,10,17,19,20,[22][23][24][32][33][34][35][36]38,50,53,[58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74].…”

Section: Ball Millingmentioning

confidence: 99%

Carbon Nanotube (CNT)-Reinforced Metal Matrix Bulk Composites: Manufacturing and Evaluation

Súarez¹,

Reinert²,

Mücklich³

2016

Diamond and Carbon Composites and Nanocomposites

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Need for better understanding and more accurate estimation of radiative fluxes in urban environments, specifically urban surface albedo and exitance, motivates development of new remote sensing and three-dimensional (3D) radiative transfer (RT) modeling methods. The discrete anisotropic radiative transfer (DART) model, one of the most comprehensive physically based 3D models simulating Earth/atmosphere radiation interactions, was used in combination with satellite data (e.g., Landsat-8 observations) to better parameterize the radiative budget components of cities, such as Basel in Switzerland. After presenting DART and its recent RT modeling functions, we present a methodological concept for estimating urban fluxes using any satellite image data.

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“…Al, Cu, Mg and Ni) have been published which demonstrated that CNTs could enhance the mechanical, thermal and electrical properties of the composites [6][7][8][9][10][11][12][13][14][15][16][17][18]. Among them, CNT/Cu composite is one of the most important composites due to their high potential applications in the electronics and electrical industries [19][20][21][22]. Up to now, the most critical issues in the fabrication of the CNT-reinforced MMCs including (i) uniform dispersion of CNTs and (ii) improve the interfacial bond strength between CNT and the matrix.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties and wear resistance of cold-rolled carbon nanotubes reinforced copper matrix composites

Luong

Luan

Anh

et al. 2020

Mater. Res. Express

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Multi-walled carbon nanotube (MWCNT)/Cu composite containing 0.5 vol% MWCNTs were prepared by a high energy ball milling followed by conventional sintering and finally cold rolling. Microstructure studies showed that MWCNTs were uniformly dispersed and implanted inside the Cu matrix. The MWCNT/Cu composites showed an improvement in hardness and tensile strength up to 37% and 44% respectively compared to those of pure Cu. The enhancement is attributed to the uniform dispersion and strengthening due to the addition of MWCNTs. The yield strength of the composite has been quantified by several strengthening mechanisms including grain boundary strengthening, dislocation strengthening, Orowan strengthening and load transfer. The calculated results indicated that the load transfer strengthening has the largest contribution to the yield strength of the composite which implied the key role of the interfacial bond strength between MWCNTs and Cu matrix on the strengthening behaviors. The friction coefficient and specific wear rate of the composites were reduced with the addition of MWCNT content due to the self-lubrication effect of CNTs and high mechanical properties.

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Effect of high-pressure torsion on the microstructure and strengthening mechanisms of hot-consolidated Cu–CNT nanocomposite

Cited by 45 publications

References 25 publications

Microstructure and microhardness of an Al-6061 metal matrix composite processed by high-pressure torsion

Microstructure and microhardness of an Al-6061 metal matrix composite processed by high-pressure torsion

Carbon Nanotube (CNT)-Reinforced Metal Matrix Bulk Composites: Manufacturing and Evaluation

Enhanced mechanical properties and wear resistance of cold-rolled carbon nanotubes reinforced copper matrix composites

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