6061 Al reinforced with silicon nitride particles processed by mechanical milling

Fogagnolo, João Batista; Ruiz-Navas, E.M.; Robert, Maria Helena; Torralba, J. M.

doi:10.1016/s1359-6462(02)00133-1

Cited by 83 publications

(47 citation statements)

References 15 publications

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“…These samples have a broad particle size distribution, which allows them to become denser due to a high interstitial occupancy by the smaller particles in the vacant spaces. Contrary, samples with 4h of milling present an important decrease in density caused essentially by poor packing of particles due their increased hardness by severe deformation 27 , this behavior has been previously reported 28 . In addition, the presence of MG particles also affects the densification, because the modification of particle size distribution due increased small particles generation.…”

Section: Densitymentioning

confidence: 62%

Mechanical and Microstructural Response of an Aluminum Nanocomposite Reinforced with Carbon-Based Particles

et al. 2016

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The present work deals with the study of some aluminum (Al) composites reinforced with metallized-graphite (MG) particles prepared by mechanical milling and powder metallurgy routes. Density, morphology evolution and mechanical performance of composites were investigated as a function of MG concentration and milling time. The as-milled powders were characterized by X-ray diffraction and optical/electron microscopy; meanwhile, the mechanical testing was carried out on cylindrical specimens prepared from powders by powder metallurgy. Evidence reveals that high-energy ball milling induce a homogeneous dispersion of graphite nanoparticles in the Al matrix; this is related to an enhancement of hardness and strength response of studied composites. The composite sample with 0.5% MG addition (in weight) reached an increase of 40% on hardness and 50% on strength (compared with pure Al sample); nevertheless an adverse effect was observed with longer milling and/or higher MG concentration.

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Section: Densitymentioning

confidence: 62%

Mechanical and Microstructural Response of an Aluminum Nanocomposite Reinforced with Carbon-Based Particles

et al. 2016

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“…[1][2][3][4][5][6][7][8][9] Moreover, mechanical milling, especially cryomilling, is an effective way to fabricate a large quantity of nanocrystalline metal powders as the result of repeated cold welding and fracturing processes. [1,10] As described in Part I of this series of articles, [11] cryomilling has been successfully applied to prepare a composite powder consisting of homogeneously distributed B 4 C particles in a nanocrystalline Al matrix.…”

Section: Introductionmentioning

confidence: 99%

Cryomilling for the fabrication of a particulate B4C reinforced Al nanocomposite: Part II. Mechanisms for microstructural evolution

Ye¹,

Lee

Ahn

et al. 2006

Metall Mater Trans A

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Cryomilling was successfully employed to fabricate particulate B 4 C-reinforced Al matrix nanocomposite powders. In order to investigate the microstructural evolution during cryomilling, composite powders were milled for different times. These powders were collected from the milling chamber and the microstructures were characterized to reveal the formation mechanism for this nanocomposite. The microstructural evolution, including the morphology and size of the milled composite powders, the size and distribution of the B 4 C, and the dimension of the Al grains, is discussed on the basis of the experimental results.

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“…Furthermore, there has been growing interest of using ZrB 2 as reinforcement due to its high melting point, high electrical and thermal conductivity and chemical inertness [14][15][16] . In the recent years, there has been much research into various aspects of Al-ZrB 2 composites produced mainly by casting route and PM method 17,18 . The limited research has been conducted on the effect of second metallic phase as a binder or coherent phase between aluminum and reinforcement 19 .…”

Section: Introductionmentioning

confidence: 99%

Microwave Sintering of Aluminum-ZrB2 Composite: Focusing on Microstructure and Mechanical Properties

et al. 2016

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Microwave assisted rapid sintering was carried out to fabricate aluminum-ZrB 2 metal matrix composites containing 1 wt% cobalt and 10, 15 and 20 wt% ZrB 2 as the reinforcements at temperatures of 600, 700 and 800°C. The results showed that the highest values of density and bending strength (97% of theoretical density and 240 MPa, respectively) were obtained in a composite containing 15 wt% ZrB 2 and 1 wt% Co sintered at 600°C. Furthermore, the optimum values of compressive strength and hardness (350 MPa and 63 Vickers, respectively) were measured for a composite containing 20 wt% ZrB 2 sintered at 600°C. At all sintering temperatures, XRD analysis revealed ZrB 2 and aluminum as the only crystalline phases. Microstructure investigations demonstrated a homogeneous distribution of ZrB 2 particles in the aluminum matrix.

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6061 Al reinforced with silicon nitride particles processed by mechanical milling

Cited by 83 publications

References 15 publications

Mechanical and Microstructural Response of an Aluminum Nanocomposite Reinforced with Carbon-Based Particles

Mechanical and Microstructural Response of an Aluminum Nanocomposite Reinforced with Carbon-Based Particles

Cryomilling for the fabrication of a particulate B4C reinforced Al nanocomposite: Part II. Mechanisms for microstructural evolution

Microwave Sintering of Aluminum-ZrB2 Composite: Focusing on Microstructure and Mechanical Properties

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