The Influence of Volume Fraction and Size of SiC Particles on the Mechanical Properties of Metal Matrix Composites

1999 ◽  
pp. 605-610
Author(s):  
Žaklina Gnjidić ◽  
Dušan Božić
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Matrix Composites ◽  
Sic Particles

Effects of Particle Size and Volume Fraction on Extrusion Texture of SiCp/Al Metal Matrix Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1437-1441 ◽  
Author(s):  
Chun Lin He ◽  
Jian Ming Wang ◽  
Qing Kui Cai
Keyword(s):  
Particle Size ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Deformation Texture ◽  
Fiber Texture ◽  
Matrix Composites ◽  
Texture Intensity ◽  
Sic Particles ◽  
Al Matrix

The texture development was investigated in the extruded Al and Al metal matrix composites (MMCs) reinforced with SiC particles of different sizes and volume fractions. During extrusion, both the unreinforced Al and the MMCs develop a strong fiber texture with two components: <111> and <100>. When SiC is introduced into aluminum, the main component of texture is not modified, but the intensity of the component evolves with the volume fraction and average size of SiC particles. For the MMCs reinforced with 3.5μm SiC particles, the texture intensity of the Al matrix tends to decrease as the SiC volume fraction increases, and it is lower than that in the unreinforced Al. However, for the MMCs reinforced with 25 nm and 150 nm SiC particles, the texture intensity of the Al matrix is higher than that in the unreinforced matrix, and it increases with increasing the SiC volume fraction. It is found that superfine particles may introduce some new component into the deformation texture, and the texture intensity increases as the SiC particle size decreases.

Study on Mechanical Properties of Aluminium Based Metal Matrix Composites by Hybrid Reinforcement

2015 ◽  
Vol 813-814 ◽  
pp. 116-120
Author(s):  
K.S. Arun ◽  
T. Panneerselvam ◽  
S. Raghuraman
Keyword(s):  
Mechanical Properties ◽  
Boron Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Matrix Composites ◽  
Zirconium Silicate ◽  
Structural Applications ◽  
Aa6063 Alloy ◽  
Hybrid Reinforcement

Now a day’s Hybrid Metal Matrix composites has a large number of applications in automobiles, aircrafts and structural applications like brake rotors, engine parts and cylinder liners. The aim of this study is to determine the mechanical properties of boron carbide (B4C) and zirconium silicate (ZrSiO4) particulate reinforced with AA6063 alloy composites. In this experimental study, B4C and ZrSiO4 particulates reinforced with AA6063 composites were manufactured by stir casting technique. Mechanical properties of these composite materials were investigated by different weight percentages, 3%, 6%, 9% of boron carbide (B4C) and 9%, 6%, 3% of zirconium silicate (ZrSiO4) respectively. The mechanical properties evaluation reveals variations in hardness and the tensile strength values with the composite combinations investigated in this work. From the experimental studies, the optimum volume fraction of hybrid reinforcement in AA6063 alloy on the basis of mechanical properties and SEM analysis is also determined.

scholarly journals Comparison of Microstructure and Mechanical Properties of A356/SiC Metal Matrix Composites Produced by Two Different Melting Routes

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Shashi Prakash Dwivedi ◽  
Satpal Sharma ◽  
Raghvendra Kumar Mishra
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Weight Percent ◽  
Stir Casting ◽  
Matrix Composites ◽  
Factors Influencing ◽  
Xrd Study ◽  
Sic Particles ◽  
Electromagnetic Stir Casting

A356/SiC metal matrix composites with different weight percent of SiC particles were fabricated by two different techniques such as mechanical stir casting and electromagnetic stir casting. The results of macrostructure, microstructure, and XRD study revealed uniform distribution, grain refinement, and low porosity in electromagnetic stir casing samples. The mechanical results showed that the addition of SiC particles led to the improvement in tensile strength, hardness, toughness, and fatigue life. It indicates that type of fabrication process and percentage of reinforcement are the effective factors influencing the mechanical properties. It is observed that when percentage of reinforcement increases in electromagnetic stir casting, best mechanical properties are obtained.

scholarly journals Effect of the Nanotube Radius and the Volume Fraction on the Mechanical Properties of Carbon Nanotube-Reinforced Aluminum Metal Matrix Composites

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3947
Author(s):  
Myung Eun Suk
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Fracture Strain ◽  
Volume Fraction ◽  
Strain Curve ◽  
Matrix Composites ◽  
Strength And Stiffness ◽  
Walled Carbon Nanotubes

By using the advantages of carbon nanotubes (CNTs), such as their excellent mechanical properties and low density, CNT-reinforced metal matrix composites (MMCs) are expected to overcome the limitations of conventional metal materials, i.e., their high density and low ductility. To understand the behavior of composite materials, it is necessary to observe the behavior at the molecular level and to understand the effect of various factors, such as the radius and content of CNTs. Therefore, in this study, the effect of the CNT radius and content on the mechanical properties of CNT-Al composites was observed using a series of molecular dynamics simulations, particularly focusing on MMCs with a high CNT content and large CNT diameter. The mechanical properties, such as the strength and stiffness, were increased with an increasing CNT radius. As the CNT content increased, the strength and stiffness increased; however, the fracture strain was not affected. The behavior of double-walled carbon nanotubes (DWNTs) and single-walled carbon nanotubes (SWNTs) was compared through the decomposition of the stress–strain curve and observations of the atomic stress field. The fracture strain increased significantly for SWNT-Al as the tensile force was applied in the axial direction of the armchair CNTs. In the case of DWNTs, an early failure was initiated at the inner CNTs. In addition, the change in the elastic modulus according to the CNT content was predicted using the modified rule of mixture. This study is expected to be useful for the design and development of high-performance MMCs reinforced by CNTs.

Development of AA6061/SiCp Metal Matrix Composites by Conventional Stir Casting and Ultrasonic Assisted Casting Routes – A Comparative Study

2014 ◽  
Vol 984-985 ◽  
pp. 384-389 ◽  
Author(s):  
L. Poovazhagan ◽  
K. Kalaichelvan ◽  
V.R. Balaji ◽  
P. Ganesh ◽  
A. Kali Avudaiappan
Keyword(s):  
Mechanical Properties ◽  
Comparative Study ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Ultrasonic Cavitation ◽  
Matrix Composites ◽  
Weight Percentage ◽  
Sic Particles ◽  
Ultrasonic Assisted

The major problem associated with the fabrication of cast metal matrix composites is the agglomeration tendency of the particles in the metal matrix. The agglomeration of the particles in the metal matrix greatly reduces the mechanical properties of the fabricated composite materials. In this work, to reduce the agglomeration tendency of SiC particles in Al matrix, different weight percentages of SiC particles reinforced Al composites were fabricated by the conventional stir casting and the ultrasonic cavitation assisted casting routes. Results indicate that in both the methods, particle distribution was uniform upto certain weight percentage after that agglomeration of particles were observed. The mechanical properties of the as-cast composites were superior to that of the as-cast alloys. Composites fabricated by the ultrasonic cavitation method showed slightly better mechanical properties than the composites fabricated by the conventional stir casting route. From the consolidated results it was also observed that 10 weight % of SiCpreinforced composite fabricated by the ultrasonic cavitation method yields the better mechanical properties when compared to the other composites fabricated in this study. Keywords: Metal Matrix Composites, Stir Casting, Ultrasonic Cavitation, Mechanical Properties, Microstructure, Comparative Study

Damping and Mechanical Properties of (Graphite + 9Al2O3·2B2O3)/Mg Metal Matrix Composites

2004 ◽  
Vol 449-452 ◽  
pp. 657-660
Author(s):  
Il Dong Choi ◽  
Dong Min Kim ◽  
Kyung Mok Cho ◽  
Ik Min Park
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Damping Capacity ◽  
High Temperature Strength ◽  
Al Alloy ◽  
Matrix Composites ◽  
Graphite Particles

Mg alloys have potential to use automotive parts because of their weight and castability. High temperature strength and damping capacity is important to the automotive power train parts. Mg alloy has lower creep and thermal fatique strength but has better damping capacity than Al alloy. It is known that short fiber reinforced Mg metal matrix composites(MMC) exhibits superior high temperature strength and graphite reinforced Mg MMC shows excellent damping capacity. Therefore, in this study, the effect of graphite particles(15-25%) and alborex (9Al2O3ּ2B2O3) whiskers(5-15%) on the damping behavior and mechanical properties of Mg MMC was studied. Graphite particles and alborex whiskers were chosen to increase damping capacity and high temperature strength, respectively. The Mg MMC was fabricated by squeeze casting and the total quantity of reinforcements(graphite + alborex) was maintained to 30 volume percent. The damping capacity of the metal matrix composites was increased and the flexural strength and hardness were decreased with increasing the volume fraction of graphite particles, that is, reducing the volume fraction of alborex whiskers.

scholarly journals Mechanical and Tribological Properties of Co-Electrodeposited Particulate-Reinforced Metal Matrix Composites: A Critical Review with Interfacial Aspects

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3181
Author(s):  
Piotr Jenczyk ◽  
Hubert Grzywacz ◽  
Michał Milczarek ◽  
Dariusz M. Jarząbek
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Composite Coatings ◽  
Matrix Composites ◽  
Friction Behavior ◽  
Mechanical And Tribological Properties ◽  
Fraction Measurement ◽  
Particulate Reinforced

Particulate-reinforced metal matrix composites (PRMMCs) with excellent tribo-mechanical properties are important engineering materials and have attracted constant scientific interest over the years. Among the various fabrication methods used, co-electrodeposition (CED) is valued due to its efficiency, accuracy, and affordability. However, the way this easy-to-perform process is carried out is inconsistent, with researchers using different methods for volume fraction measurement and tribo-mechanical testing, as well as failing to carry out proper interface characterization. The main contribution of this work lies in its determination of the gaps in the tribo-mechanical research of CED PRMMCs. For mechanical properties, hardness is described with respect to measurement methods, models, and experiments concerning CED PRMMCs. The tribology of such composites is described, taking into account the reinforcement volume fraction, size, and composite fabrication route (direct/pulsed current). Interfacial aspects are discussed using experimental direct strength measurements. Each part includes a critical overview, and future prospects are anticipated. This review paper provides an overview of the tribo-mechanical parameters of Ni-based co-electrodeposited particulate-reinforced metal matrix composite coatings with an interfacial viewpoint and a focus on hardness, wear, and friction behavior.

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