The Effect of Mono and Hybrid Additives of Ceramic Nanoparticles on the Tribological Behavior and Mechanical Characteristics of an Al-Based Composite Matrix Produced by Friction Stir Processing

Moustafa, Essam B.; Taha, Mohammed A.

doi:10.3390/nano13142148

Cited by 17 publications

(6 citation statements)

References 42 publications

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“…This observed improvement in the mechanical properties due to the successive addition of mono and hybrid ceramics (VC and graphene) that obey the uniformly distributed ceramics (high strength) in the upper layer of the functionally graded samples is a major reason for transferring the applied load from the Al alloy (low strength) to the ceramic reinforcement (high strength). 15,37,45,46 Moreover, it is also feasible to see that the dislocations' interactions with one another limit their ability to move inside the layers of functionally graded samples. Consequently, strain mismatch and the impact of plastic limitation increase dislocation density, enhancing the samples' strength.…”

Section: Resultsmentioning

confidence: 99%

“…5,6 Among the FGM materials, functionally graded Al matrix composites are the most preferred due to their applications in various fields like aerospace, where they are used in manufacturing aircraft fuselages and wings, engine pistons and parts, automobile drive shafts, etc, due to their excellent properties. [7][8][9] Aluminum and its alloys are generally strengthened using many reinforcements, such as Al 2 O 3 , 10 SiC, 11 B 4 C, 12 ZrO 2 , 13 NbC, 14 and VC, 15 depending on the expected property requirements.…”

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confidence: 99%

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Fabrication and Characterization of Functionally Graded Nanocomposites: Impact of Graphene and Vanadium Carbide on Aluminum Matrix

Moustafa,

Said,

Aljabri

et al. 2024

ECS J. Solid State Sci. Technol.

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Functional graded nanocomposites (FGNCs) based on Al are artificially tailored heterogeneous materials intended to serve the demand for diverse and contradicting properties used in various industrial applications. FGNCs and hybrid FGNCs (HFGNCs) based on Al reinforced with graphene and vanadium carbide (VC) were prepared using powder metallurgy techniques and investigated. Both samples were designed with a gradient composition, where the bottom layer consisted of 100% pure Al, followed by three consecutive layers containing progressively increasing amounts of reinforcement. The incorporation of graphene and VC into layer powders resulted in a decrease in both particle and crystal dimensions compared to pure Al. Adding graphene has a negative effect on bulk density samples, while VC has a positive effect. Reinforcing materials led to a decrease in thermal conductivity that reached 26.7 % for samples reinforced with VC reinforcement, except for FGNCs reinforced with graphene, which increased by ~3.3 compared to Al. The samples’ CTE and electrical conductivity values decreased, although adding graphene alone led to a slight decrease in electrical conductivity. A significant improvement in all mechanical properties was noted with additional. The HFGCNs reinforced with the largest amount of hybrid reinforcement recorded an improvement in CTE value, Young's modulus, and compressive strength by about 38.1%, 22.2%, and 20.5%, respectively, compared to Al

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Fabrication and Characterization of Functionally Graded Nanocomposites: Impact of Graphene and Vanadium Carbide on Aluminum Matrix

Moustafa,

Said,

Aljabri

et al. 2024

ECS J. Solid State Sci. Technol.

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“…As per the Hall-Petch relationship, smaller grain sizes can impede dislocation, which increases hardness by hindering plastic deformation. Additionally, silicon dioxide nanoparticles can act as barriers to dislocation by strengthening the grain boundaries [40]; this in turn also restricts dislocation motion and plastic deformation, thereby increasing the hardness. Lastly, the presence of silicon dioxide and magnesium silicide (Mg 2 Si) can increase overall hardness because of their hardnesses of 7.3 GPa [41] and 4.5 GPa [42], respectively, which is significantly greater than that of magnesium.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

A First-Time Addition of Selenium to a Mg-Based Metal Matrix Composite for Biomedical Purposes

Pahaul,

Johanes,

Gupta

2024

J. Compos. Sci.

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A magnesium-based metal matrix composite, Mg-5Se-2Zn-2SiO2, was synthesized using the Disintegrated Melt Deposition (DMD) method followed by hot extrusion. Elemental analysis revealed that the material experienced selenium loss which was attributed to the evaporation of selenium at high temperatures. Superior damping characteristics were exhibited while retaining similar Young’s modulus, and significant grain refinement also resulted in decisively superior mechanical properties such as hardness (32% increase), fracture strain (39% increase), as well as yield and ultimate compressive strength (157% and 54% increase, respectively). These were a consequence of SiO2 addition as well as presence of Mg2Si (and MgSe) intermetallic phases which were detected by X-ray characterization. Furthermore, while the material had lower corrosion resistance than pure magnesium, it retained acceptable corrosion resistance as well as structural integrity after the full immersion duration of 28 days. Overall, the material exhibits promising potential for applications in the biomedical field, especially in development of smaller and lighter implants where mechanical properties are paramount, with key lessons learned for the synthesis of Mg-materials containing selenium for the future.

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“…It is important to emphasize that there are many effective methods to produce Al and its alloy matrix nanocomposites, such as fraction stir 18 , squeeze casting 19 , stir casting 20 , and powder metallurgy (PM) 21 , 22 . The latter is a modern and cost-effective tool for good dispersion of reinforcement in the matrix, giving a uniform distribution of particles in the microstructure 23 , 24 .…”

Section: Introductionmentioning

confidence: 99%

A comprehensive study of Al-Cu-Mg system reinforced with nano-ZrO2 particles synthesized by powder metallurgy technique

Moustafa,

Aljabri,

Abushanab

et al. 2024

Sci Rep

Self Cite

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More focus has recently been placed on enhancing the strength, elastic modulus, coefficient of thermal expansion (CTE), wear and corrosion resistance, and other qualities of aluminum (Al) alloys by varying the quantity of ceramics added for a range of industrial uses. In this regard, Al-4.2-Cu-1.6Mg matrix nanocomposites reinforced with nano-ZrO2 particles have been created using the powder metallurgy approach. The microstructure and particle size distributions of the produced powders were analyzed using a diffraction particle size analyzer, XRD, TEM, and SEM. To achieve good sinterability, the powders were compacted and sintered in argon. The sintered nanocomposites' mechanical, elastic, and physicochemical characteristics were measured. Additionally, the behavior of corrosion, wear, and thermal expansion were examined. The results showed a decrease in the particle sizes of the Al-Cu-Mg alloy by adding ZrO2 nanoparticles up to 45.8 nm for the composite containing 16 wt.% ZrO2. By increasing the sintering temperature to 570 °C, the densification of nanocomposites was enhanced. Also, the coefficient of thermal expansion and wear rate remarkably decreased by about 28 and 37.5% by adding 16 wt.% ZrO2. Moreover, microhardness yield, strength, and Young’s modulus were enhanced to 161, 145, and 64%, respectively, after adding 16 wt.% ZrO2. In addition, increasing the exposure time was responsible for decreasing the corrosion rate for the same sample.

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The Effect of Mono and Hybrid Additives of Ceramic Nanoparticles on the Tribological Behavior and Mechanical Characteristics of an Al-Based Composite Matrix Produced by Friction Stir Processing

Cited by 17 publications

References 42 publications

Fabrication and Characterization of Functionally Graded Nanocomposites: Impact of Graphene and Vanadium Carbide on Aluminum Matrix

Fabrication and Characterization of Functionally Graded Nanocomposites: Impact of Graphene and Vanadium Carbide on Aluminum Matrix

A First-Time Addition of Selenium to a Mg-Based Metal Matrix Composite for Biomedical Purposes

A comprehensive study of Al-Cu-Mg system reinforced with nano-ZrO2 particles synthesized by powder metallurgy technique

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