Effect of carbon nanotubes (CNTs) and silicon carbide (SiC) on mechanical properties of pure Al manufactured by powder metallurgy

Herzallah, Heba; Elsayd, Ayman; Shash, Ahmed Y.; Adly, Mohamed A.

doi:10.1016/j.jmrt.2019.12.027

Cited by 38 publications

(15 citation statements)

References 24 publications

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“…In recent years, powder metallurgy (PM) has been successfully performed to produce pure Al, Al alloys and Al matrix composites [18], with a series of advantages including high-solute content, fine grain, and homogeneous microstructure [19]. However, most of PM 7xxx Al alloys are prepared by gas-atomized alloy powder with relatively coarse particles, high hardness, and low sintering activity, and thereby enhanced sintering such as hot-press sintering (HPS) [20] and spark plasma sintering (SPS) [21−23] has to be adopted to improve the formability and sintered density.…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Chen

Han

et al. 2021

J. Cent. South Univ.

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In this work, a novel ultrahigh-strength Al-10Zn-3.5Mg-1.5Cu alloy was fabricated by powder metallurgy followed by hot extrusion. Investigations on microstructural evolution and mechanical properties of the fabricated samples were carried out. The results show that the grain size of sintered samples matches with the powder particles after ball milling. The relative densities of sintered and hot extruded samples reach 99.1% and 100%, respectively. Owing to the comprehensive mechanism of grain refinement, aging and dispersion strengthening, the ultimate tensile strength, yield strength and elongation of the Al-10Zn-3.5Mg-1.5Cu alloy after hot extrusion and subsequent heat treatment achieve 810 MPa, 770 MPa and 8%, respectively.

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Section: Introductionmentioning

confidence: 99%

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Chen

Han

et al. 2021

J. Cent. South Univ.

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“…Furthermore, standard methods can be used to produce various particulates and whisker-reinforced MMCs [15]. Incorporating ceramic components, on the other hand, may reduce ductility, fracture toughness, and heat conductivity [45]. Fiber-dispersed metal matrix composites have a greater cost, more difficult fabrication procedures, and recyclability issues when compared to particulate-reinforced metal matrix composites [46].…”

Section: Particulate Reinforcements On Amcs and Hamcsmentioning

confidence: 99%

An Insight into Mechanical and Metallurgical Behavior of Hybrid Reinforced Aluminum Metal Matrix Composite

Ashebir

Mengesha

Sinha

2022

Advances in Materials Science and Engineering

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Hybrid reinforced particulate aluminum matrix composite materials (HAMCs) are a breakthrough kind of material made by combining two or more distinct reinforcing components in the aluminum (Al) matrix. Composites with many reinforcing phases offer a superior overall mix of characteristics than composites with only one. This article’s wide literature review of metal matrix composite (MMC) especially for aluminum matrix composites (AMC) was carried out. Discussions of various widely adopted synthesis methods such as stir casting and powder metallurgy have been presented. The effect of various reinforcement ceramic particles such as silicon carbide (SiC), aluminum oxide (Al2O3), graphite (Gr) on the mechanical and metallurgical properties of MMC has been reviewed. The summary of various characterizations such as X-ray diffraction (X-RD), and optical microscopy (OM) including testing such as hardness, tensile, compressive, and tribological behavior has been discussed in detail to demonstrate a full grasp of the many features of HAMCs, such as manufacturing, physicomechanical properties, wear, and corrosion characteristics. Future developments and potentially useful materials as alternative reinforcements are discussed at the end of the review.

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“…Efficient approaches, such as the addition of alloying elements [ 4 , 5 ], surface modification [ 6 , 7 ], and novel fabrication processes [ 8 , 9 ] can be used to improve wettability and regulate interfacial reactions. In recent studies, the innovative fabrication methods have focused on the interface which has been promoted a large improvement on the mechanical properties of ceramic-reinforced Al matrix composites; for instance, accumulative roll bonding [ 10 , 11 ], powder metallurgy technique [ 12 , 13 ], liquid metal infiltration [ 14 , 15 ], selective laser melting [ 16 , 17 ], plasma spraying [ 18 , 19 ], in situ growth [ 20 , 21 ], and special casting. All the above routes enhanced wettability or inhibited interfacial reactions, improving the properties to some extent.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Al Matrix Composite Enhanced by In Situ Formed SiC, MgAl2O4, and MgO via Casting Process

Jiao

Zhu

et al. 2021

Materials

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Al matrix composite, reinforced with the in situ synthesized 3C–SiC, MgAl2O4, and MgO grains, was produced via the casting process using phenolic resin pyrolysis products in flash mode. The contents and microstructure of the composites’ fracture characteristics were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Mechanical properties were tested by universal testing machine. Owing to the strong propulsion formed in turbulent flow in the pyrolysis process, nano-ceramic grains were formed in the resin pyrolysis process and simultaneously were homogeneously scattered in the alloy matrix. Thermodynamic calculation supported that the gas products, as carbon and oxygen sources, had a different chemical activity on in situ growth. In addition, ceramic (3C–SiC, MgAl2O4, and MgO) grains have discrepant contents. Resin pyrolysis in the molten alloy decreased oxide slag but increased pores in the alloy matrix. Tensile strength (142.6 ± 3.5 MPa) had no change due to the cooperative action of increased pores and fine grains; the bending and compression strength was increasing under increased contents of ceramic grains; the maximum bending strength was 378.2 MPa in 1.5% resin-added samples; and the maximum compression strength was 299.4 MPa. Lath-shaped Si was the primary effect factor of mechanical properties. The failure mechanism was controlled by transcrystalline rupture mechanism. We explain that the effects of the ceramic grains formed in the hot process at the condition of the resin exist in mold or other accessory materials. Meanwhile, a novel ceramic-reinforced Al matrix was provided. The organic gas was an excellent source of carbon, nitrogen, and oxygen to in situ ceramic grains in Al alloy.

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Effect of carbon nanotubes (CNTs) and silicon carbide (SiC) on mechanical properties of pure Al manufactured by powder metallurgy

Cited by 38 publications

References 24 publications

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

An Insight into Mechanical and Metallurgical Behavior of Hybrid Reinforced Aluminum Metal Matrix Composite

Mechanical Properties of Al Matrix Composite Enhanced by In Situ Formed SiC, MgAl2O4, and MgO via Casting Process

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