Hot Extrusion of A356 Aluminum Metal Matrix Composite with Carbon Nanotube/Al2O3 Hybrid Reinforcement

Kim, H. H.; Babu, J.S.S.; Kang, Chung Gil

doi:10.1007/s11661-014-2185-5

Cited by 30 publications

(8 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the uniform microstructure of the composite depends on the uniformity of CNT dispersion in the porous structure. Kim et al fabricated A356 Al alloy with CNTs by this process followed by hot extrusion. The authors reported that the reinforcement can be incorporated beyond 623 K for better bonding and superior properties.…”

Section: Processing Methodsmentioning

confidence: 99%

Carbon Nanotube‐Reinforced Aluminum Matrix Composites

Mohammed

Chen

2019

Adv Eng Mater

View full text Add to dashboard Cite

Herein, the investigations conducted in the area of aluminum (Al) matrix composites reinforced with carbon nanotubes (CNTs) are presented. The application of CNT reinforcement in Al alloys is driven by its exceptional chemical and mechanical properties. The critical issues in the processing techniques, challenges in the interfacial mechanisms between the Al matrix and CNTs, and strengthening effects due to the presence of reinforcements are reviewed. The mechanical properties of CNT/Al composites are found to be effectively enhanced with an addition of CNTs even at a small amount. The extent of strength improvements depends mainly on the dispersion of CNTs in the matrix and interfacial bonding between the matrix and CNTs. Limited theoretical modeling can predict the properties of CNT/Al composites to some extent, but without considering the detailed processing parameters. Based on the gaps identified here, future research directions are suggested, including the relationships between the processing parameters and micro-and nanostructures, and multiscale mechanical modeling and simulation, aiming to further understand the strengthening mechanisms and develop advanced CNT-reinforced Al and other metal composites for critical engineering applications.

show abstract

Section: Processing Methodsmentioning

confidence: 99%

Carbon Nanotube‐Reinforced Aluminum Matrix Composites

Mohammed

Chen

2019

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…A lot of work on primary processed composite done with various combination researcher are now focused on secondary processing of primary processed composite, it has found larger difference in hardness was observed at the surface compared to the core area due to severe deformation that occurred at the dead metal zone surface during extrusion. [16] Due to extrusion process the grain refinement improves which in turns improve the mechanical properties of composite [5]. The present work aims to study the effect of secondary process (Cold extrusion) on mechanical and wear properties for aluminum matrix reinforced with SiC, Al 2 O 3 and CeO 2 particles of varying weight percentage from 0% to 8% instep of 2%.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Wear Properties of Cold Extruded Al6063 Metal Matrix Alloy Reinforced with Silicon Carbide, Alumina and Cerium Oxide

Nazeer,

Safiulla

2020

IJEAT

View full text Add to dashboard Cite

Metal matrix composite is considered in various engineering fields like Automobile, medical, electronics aerospace, marine, recreational sectors, of which Aluminum metal matrix composite is considered mostly because of its high strength to weight ratio, easy of fabrication, corrosion resistance, good aesthetic appearance and high resistance to wear etc. This paper concentrates on the effect of secondary processing (Cold Extrusion) on mechanical and wear properties of Al6063 reinforced with SiC, Al2O3 and CeO2 particles. Here composite systems prepared by varying reinforcement from 0% to 8% in steps of 2%. Stir casting route adopted for casting composite systems after casting the composite is made to pass through extrusion process with an extrusion ratio of 1.93 with a total strain of 1.45. All composite systems tested for mechanical properties as per ASTM and ISO standard. Wear test was conducted on pin on disc setup for different loads, reinforcement, sliding distance and sliding speed. Results reveals that due increase in reinforcement the mechanical properties have improved further improvement observed when subjected to extrusion process, similar observation was made for wear studies which conclude the wear rate is improved for extruded composite as compared to cast composite systems observed by various researchers.

show abstract

“…In recent years, metal matrix composites (MMC) are often preferred in the space industry, automotive industry, and medical field, where especially high strength, rigidity, high wear and corrosion resistance, superior mechanical and morphological properties are expected [1,2]. Since discovery of CNTs and recognition of their unique mechanical, thermal, and electrical properties, many researchers have attempted to produce CNT reinforced metal-matrix composites that exhibit one or more of these properties [3][4][5][6][7][8]. Al, Ti, Mg, Si, and Cu are used intensively as matrix in CNT reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

“…Some properties of this method like facilitating distribution of CNTs and promising about overcoming nanotube accumulation, which is one of main problem of developing CNT reinforced MMC, make it important. In recent research, it is seen that CNT reinforced A356 composites are produced via various methods [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Carbon Nanotube Ratio on Mechanical and Morphological Properties of A356-Carbon Nanotube Composites

Evlen

Akçaer

2019

Acta Phys. Pol. A

View full text Add to dashboard Cite

In this study, CNT-A356 composites were obtained by reinforcing an aluminium alloy A356 matrix with 4 different ratios (0.5, 1, 1.5 and 2%) of carbon nanotubes, and hardness, wear and microstructure properties of these composites were investigated. Powder metallurgy method was used for producing composites. A356 powders and CNTs were mixed via ball milling for 1 h, and cold pressed in powder pressing mold. After that, mold was taken into a functional furnace, and hot pressing operation was carried out. Pressed bulk was sintered in a vacuum atmosphere (10 −6 mbar) at 550 • C for 1 h. Hardness measurements, wear tests, and microstructure analyses of produced samples were performed. As a result of experimental studies, CNTs were observed to be located as agglomeration among matrix grains, and a more hollow structure was formed by increasing CNT ratio. Moreover, weight loss increased as hardness values decreased when CNT ratio exceeded 1%. The highest hardness value was measured in composite with 1% CNT.

show abstract

Hot Extrusion of A356 Aluminum Metal Matrix Composite with Carbon Nanotube/Al2O3 Hybrid Reinforcement

Cited by 30 publications

References 24 publications

Carbon Nanotube‐Reinforced Aluminum Matrix Composites

Carbon Nanotube‐Reinforced Aluminum Matrix Composites

Mechanical and Wear Properties of Cold Extruded Al6063 Metal Matrix Alloy Reinforced with Silicon Carbide, Alumina and Cerium Oxide

Effects of Carbon Nanotube Ratio on Mechanical and Morphological Properties of A356-Carbon Nanotube Composites

Contact Info

Product

Resources

About