Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites

Yang, Zhiyu; Fan, Jie; Liu, Yanqiang; Nie, Junhui; Yang, Zhiyuan; Kang, Yonglin

doi:10.3390/ma14030675

Cited by 23 publications

(8 citation statements)

References 31 publications

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“…60µm of epoxy/0%CSAC:100%PKSAC samples showed lesser ductility than 105 and 150 µm, which reveal that an increase in particle size increases ductility. This conforms to the conclusions of [7,19,23] that when the particle size increases, the elongation of the composite can either increase or decrease [6,7,24] in different strength matrices. It is essential to achieve a relatively high ductility when pursuing a higher-strength composite [24].…”

Section: Mechanical Properties Of Fabricated Samplessupporting

confidence: 90%

Engineering Applications of Chemically Activated Carbon Composites From Agrowastes of Palm Kernel and Coconut Shells

Akuwueke

Ossia

Nwosu

2022

JME

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Epoxy/activated carbon composites of particle sizes (60, 105, 150μm) and reinforcement weight percentages of (2, 4, 6 and 8) have been developed and evaluated for engineering applications. The physicomechanical properties were determined according to ASTM standard methods. Density decreased with an increase in reinforcement weight percentage. 2% weight increment of the particle sizes of the chemically activated carbon fillers yielded tensile and flexural strengths higher than that of the selected commercial brake pads (CB1) and (CB2), with the tensile strength of 4.84 and 6.58MPa, the flexural strength of 12.84 and 21.61MPa respectively while the hardness results compared well with the commercial brake pads samples. In general, from the standpoint of its tensile strength, %elongation at break, flexural strength, and hardness properties, these new formulations can find applications in aerospace and automobile industries where lightweight, high strength materials are sought after, hence a potential organic friction lining precursor for brake pad manufacture.

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Section: Mechanical Properties Of Fabricated Samplessupporting

confidence: 90%

Engineering Applications of Chemically Activated Carbon Composites From Agrowastes of Palm Kernel and Coconut Shells

Akuwueke

Ossia

Nwosu

2022

JME

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“…From previous studies, it was concluded that using of fillers with a small average particle size and narrow size range can obtain an improved strengthening effect on the composites [ 64 , 65 ]. Furthermore, it has been noted that a relatively small weight percentage of nano-sized particle can result in a significantly improved mechanical properties [ 66 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of flexural strength, impact strength, and surface microhardness of self-cured acrylic resin reinforced with silver-doped carbon nanotubes

Hamdy

2024

BMC Oral Health

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Background Poly-methyl methacrylate (PMMA) is a type of polymer mostly used to make denture bases. Self-cured acrylic resin (PMMA) can be used to repair a fractured acrylic denture base; however, even after repair, this area remains vulnerable. Carbon nanotubes (CNTs) could be used as a filler for polymer reinforcement. Furthermore, silver nanoparticles are efficient agents for the prevention of dental biofilm and improving their mechanical properties. The doping of CNTs with silver nanoparticles may lead to a synergistic interaction that is predicted to enhance the mechanical characteristics of the fillers. Objectives The aim of the study was to assess the influnce of manual incorporation of 0.5% weight percent (%wt.) of silver doped carbon nanotubes (Ag-doped CNTs) into commercial self-cured PMMA on its flexural strength, impact strength, and surface microhardness. Methods In this investigation, a total of 60 specimens comprised of acrylic resin were employed. They are divided into two main groups: (a) the control group, which was made by using liquid monomer and commercial self-cured PMMA powder; and (b) the modified group, prepared by hand mixing the purchased silver-doped CNTs powder (0.5% wt.) to self-cured PMMA powder (99.5%wt.), and then the blended powder was incorporated into the liquid monomer. Flexural strength, flexural modulus, impact strength, and surface microhardness were evaluated. Independent sample t-tests were used to statistically analyze the data and compare the mean values of flexural strength, flexural modulus, impact strength, and surface microhardness (p-value ≤ 0.05). Results The flexural strength of the modified groups with Ag-doped CNTs (132.4 MPa) was significantly greater than that of the unmodified (control) groups (63.2 MPa). Moreover, the flexural modulus of the modified groups with Ag-doped CNTs (3.067 GPa) was significantly greater than that of the control groups (1.47 GPa). Furthermore, the impact strength of the modified groups with Ag-doped CNTs (11.2 kJ/mm2) was significantly greater than that of the control groups (2.3 kJ/mm2). Furthermore, the microhardness of the modified groups with Ag-doped CNTs (29.7 VHN) was significantly greater than that of the control groups (16.4 VHN), (p-value = 0.0001). Conclusion The incorporation of 0.5% wt. silver doped CNTs fillers to the self-cured acrylic resin enhanced its flexural strength, flexural modulus, impact strength, and surface microhardness.

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“…Higher loads accelerate abrasive wear due to increased local tension, resulting in deeper grooves. 62 The dislocation density is raised due to the work hardening effect resulting from thermal mismatch between the particle and the base material. With an increase in load, dislocations move through the particle's pileup dislocation at the grain boundary, while stress concentration induces delamination cracks at the particle or matrix material, caused by shear deformation at the subsurface.…”

Section: Physicomechanical Properties Testmentioning

confidence: 99%

Tribological and corrosion characteristics of tetra hybrid particulate-reinforced aluminum composites for aerospace and automotive applications

Ashebir,

Mengesha,

Sinha

et al. 2023

Journal of Composite Materials

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This study investigates Hybrid Particulate-Reinforced Aluminum Matrix Composites (HPRAMCs), a material class known for exceptional physico-mechanical, tribological, and corrosion resistant properties. The research synthesizes HPRAMCs using SiC, Al2O3, graphite (Gr), and sugar cane bagasse ash (SCBA) reinforcements through a powder metallurgy process, followed by sintering at 550°C for 3 h. Comprehensive tests include X-ray diffraction (XRD) for phase analysis, physico-mechanical assessments, tribological evaluations, and corrosion resistance analyses. Notably, secondary reinforcements significantly reduce porosity, with AS4 HPRAMC exhibiting a 0.53% porosity, while AS1 HPRAMC has 1.446%. AS4 HPRAMC displays a remarkable 209.76% increase in compressive strength and a 446.40% boost in material hardness compared to pure aluminum. Secondary reinforcements also improve tribological performance, reducing wear loss by 60.27% and the coefficient of friction by 89.89%. Exceptional corrosion resistance, with an inhibition efficiency of 99.691%, is observed in the AS4 HPRAMC sample, confirmed by scanning electron microscopy (SEM). These findings underline the substantial potential of HPRAMC materials, positioning them as promising candidates for aerostructural components, aircraft systems, automobiles, spacecraft, and high-performance engineering applications.

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Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites

Cited by 23 publications

References 31 publications

Engineering Applications of Chemically Activated Carbon Composites From Agrowastes of Palm Kernel and Coconut Shells

Engineering Applications of Chemically Activated Carbon Composites From Agrowastes of Palm Kernel and Coconut Shells

Evaluation of flexural strength, impact strength, and surface microhardness of self-cured acrylic resin reinforced with silver-doped carbon nanotubes

Tribological and corrosion characteristics of tetra hybrid particulate-reinforced aluminum composites for aerospace and automotive applications

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