Development of press-and-sinter Al2024-based nanocomposites reinforced with multiwalled carbon nanotubes

Shin, S.; Moon, San; Lee, D. Y.; Lee, D. S.

doi:10.1177/0021998315623081

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…Morphologies of initial MWCNT and FLG powders displayed in were not observed on the Al2024 powder surface because the MWCNT and FLG are inferred to be embedded and dispersed inside the Al2024 powder during milling [32,33]. The elevated temperature compressive true stressetrue strain curves of the Al2024/ 5MWCNT and Al2024/0.5FLG composites in the temperature range of 250e430 C with initial strain rate of 1 Â 10 À3 s À1 are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and thermal properties of nanocarbon-reinforced aluminum matrix composites at elevated temperatures

Shin

Bae

2016

Composites Part B: Engineering

136

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Section: Resultsmentioning

confidence: 99%

Mechanical and thermal properties of nanocarbon-reinforced aluminum matrix composites at elevated temperatures

Shin

Bae

2016

Composites Part B: Engineering

136

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“…∼55.5 GPa/(mg/m 3 ) of all materials, ultrahigh Young’s modulus (∼1 TPa), tensile strength (∼150 GPa), thermal stabilities (stable up to 2527 K in vacuum), and excellent electrical conductivity for production of novel MMCs. 4–6 In order to attain high strengthening effect in AMMCs, CNTs are proposed as a novel reinforcement material for aluminum (Al)-based MMCs to carry out effective load transfer through the contact of Al–CNT interface.…”

Section: Introductionmentioning

confidence: 99%

Characterization of cubic tumbler rod milled dispersed carbon nanotubes–Aluminum composites

Alanka

Chanamala

Prasad

2018

Journal of Composite Materials

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In this work, cubic tumbler rod milling was used to disperse X wt% multiwalled carbon nanotubes (X = 0.5, 0.75, 1.0) in an aluminum matrix. Dispersed precursor of aluminum–multiwalled carbon nanotube composite was subsequently consolidated by cold compaction followed by sinter-forged process. Microstructural and mechanical behaviors of as-produced aluminum–multiwalled carbon nanotube composites with different concentration were investigated. Findings revealed that the as-produced Al–0.75 wt% carbon nanotube sinter-forged composite exhibits homogenous distribution and embedded nanotubes confirmed by the scanning electron microscope and the properties were observed to be increased significantly up to addition of 0.75 wt% of carbon nanotubes concentration than the pure aluminum as well as extruded composite and decrease to 1.0 wt% carbon nanotube due to the agglomeration of multiwalled carbon nanotube. However, enhancement of hardness, tensile strength, and Young’s modulus of the nanocomposites, compared with pure aluminum are 48.5, 83.8, and 30%, respectively. The tensile fractography of sinter-forged composite shows carbon nanotubes act like a bridge and barring the crack growth of aluminum matrix, remaining are pullout. Hence, it can be concluded that aluminum carbide phase starting from 0.75 wt% carbon nanotube and a strong interfacial bonding in as-produced aluminum–carbon nanotube composite has been observed which gives effective load transfer between aluminum matrix and carbon nanotubes.

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“…In addition, pore filling played an important role in the sintering densification process of aluminum. SE Shin et al 4 showed that Al2024-based nanocomposites reinforced with multiwalled carbon nanotubes were successfully consolidated by press and sintering. A Gökçe et al 5 illustrated the sintering behavior of aluminum elemental mixed powder, and the compacts with good microstructure and high strength were obtained.…”

Section: Introductionmentioning

confidence: 99%

Effect of the rigid constraint body thickness on aluminum alloy powder compact via hot isostatic pressing

Huang

Wang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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This work investigated the effects of the rigid constraint body thickness on the mechanical properties and densification of hot isostatic pressing–produced 2A12 aluminum alloy powder compact. With the decrease in the rigid constraint body thickness, the tensile and yield strengths of the powder compact are improved; in addition, the radial and axial displacements increase. These phenomena can be attributed to the decrease in the isostatic pressure shielded by the rigid constraint body. The shielded isostatic pressure is found to be proportional to the rigid constraint body thickness, and therefore, the decrease in the rigid constraint body thickness gives rise to a reduction in the shielded isostatic pressure and enhances the tensile and yield strength properties of the 2A12 powder compact. However, the rigid constraint body thickness has a minor impact on the relative density of powder compact. The fracture morphology of tensile specimens was also studied by scanning electron microscope, and it shows the brittle fracture characteristics.

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Development of press-and-sinter Al2024-based nanocomposites reinforced with multiwalled carbon nanotubes

Cited by 7 publications

References 23 publications

Mechanical and thermal properties of nanocarbon-reinforced aluminum matrix composites at elevated temperatures

Mechanical and thermal properties of nanocarbon-reinforced aluminum matrix composites at elevated temperatures

Characterization of cubic tumbler rod milled dispersed carbon nanotubes–Aluminum composites

Effect of the rigid constraint body thickness on aluminum alloy powder compact via hot isostatic pressing

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