EXPERIMENTAL EVALUATION OF PISTON USING ALUMINIUM ALLOY (LM24) REINFORCED WITH SIC AND GRAPHITE (original) (raw)
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The paper deals with the fabrication of aluminium based metal matrix composite and then characterized their mechanical properties such as hardness, toughness and tensile strength. In the present study a modest attempt has been made to develop aluminium based silicon carbide particulate MMCs with an objective to develop a conventional low cast method of producing MMCs and to obtain homogeneous dispersion of ceramic material. To achieve this objective stir casting technique has been adopted. Aluminium 6061 (97.06% C.P) and SiC, Fly Ash has been chosen as matrix and reinforcement material respectively. Experiment has been conducted by varying weight fraction of SiC (2.5%, 5%, 7.5%, 10%) while keeping all other parameters constant. The result indicated that the developed method is quite successful and there is an increase in the value of tensile strength, hardness and toughness with increase in weight percentage of SiC.
An Overview of Metal Matrix Composite : Processing and Sic Based Mechanical Properties *
2011
In view of large interest in the improve of Al/Al alloy based Metal matrix Composite and high-temperature ceramics on the base of silicon carbide, a comprehensive review of the data on structure, properties and the known methods of processing of silicon carbide seems timely. The most striking feature of silicon carbide is its polytypism, i.e. formation of a great number of structural changes without any change in composition. Although this feature of silicon carbide was extensively studied, no systematic up to date analysis was done. The widely used reinforcing materials for these composites are silicon carbide, aluminum oxide and graphite in the form of particles or whiskers. The ceramic particles reinforced aluminum composites termed as new generation material and these tailored and engineered with specific required properties for specific application requirements. However, Al-SiC alloys based MMC provides significantly enhanced mechanical properties, high wearing resistance of th...
Evaluation of Mechanical Properties of Aluminum-Silicon Carbide Metal Matrix Composite
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2022
A composite is a fusion of two or more different material chemically and unsolvable phases, its properties and structural concert are greater the ingredients performing homogeneous phases. Ceramics and Metals as well, can be implanted with particles, to advances their Property of these mixtures are known as MMCs. The mutual reinforcement's effect on Aluminium Metal Matrix material with individual and multiple particulate reinforcements like Hybrid Metal matrix composites are finding better applications in field such as aerospace, marine, automotive, structural, underwater, and transportation and various other fields. It s fairly observed that the density of composite was decreased and the hardness was increased. Due to its versatile properties it is preferred for fabricating different types of metal matrix composites. Metal matrix composites exhibit better and improved strength, toughness, formability, corrosion resistance, machinability, stiffness, wear, creep, fatigue and numerous other mechanical properties as compared to metals The present investigation has been focused on the different combinations of the usage of reinforced materials as a reinforcing agent in different Aluminium matrix alloys in the processing of aluminium metal matrix composites by stir casting method.
Metal matrix composite (MMCs) are next generation materials. MMCs add higher strength and stiffness than the matrix alloy, excellent wear resistance and lower coefficient of thermal expansion (CTE). Additional functionalities can be designed into some MMCs through appropriate selection of constituents. One of the important objectives of metal matrix composites is to develop a material with a judicious combination of toughness and stiffness. It decreases the sensitivity to cracks and flaws and at the same time increases the static and dynamic properties. The reinforcement effect occurs due to the extraordinary high strength of whiskers with diameters below a few micrometers. In general, Metal matrix composites consist of at least two components. One is the metal matrix and the second is reinforcement. In all cases, the matrix is defined as a metal, but a pure metal is rarely used as the matrix. It is generally an alloy. In the productivity of the composite, the matrix and the reinforcement are mixed together. Advance composite materials like Al/SiC metal matrix composite is gradually becoming very important materials in manufacturing industries e.g. aerospace, automotive and automobile industries due to their superior properties such as light weight, low density, high strength to weight ratio, high hardness, high temperature and thermal shock resistance, superior wear and corrosive resistance, high specific modulus, high fatigue strength etc. In this study aluminum (Al100)/SiC ,Silicon carbide reinforced particles metal matrix composites (MMCs) are fabricated by Melt stirring technique. The MMCs bars and circular plates are prepared with varying the reinforced particles by weight fraction ranging from 2%, 4%, 6%. The average reinforced particles size of SiC are 220 mesh, 300 mesh, 400 mesh respectively.
Physio-Mechanical Properties Of Aluminium Metal Matrix Composites Reinforced With Al2O3 And Sic
2012
Particulate reinforced metal matrix composites (MMCs) are potential materials for various applications due to their advantageous of physical and mechanical properties. This paper presents a study on the performance of stir cast Al2O3 SiC reinforced metal matrix composite materials. The results indicate that the composite materials exhibit improved physical and mechanical properties, such as, low coefficient of thermal expansion, high ultimate tensile strength, high impact strength, and hardness. It has been found that with the increase of weight percentage of reinforcement particles in the aluminium metal matrix, the new material exhibits lower wear rate against abrasive wearing. Being extremely lighter than the conventional gray cast iron material, the Al-Al2O3 and Al-SiC composites could be potential green materials for applications in the automobile industry, for instance, in making car disc brake rotors.
Studies on Al6061-SiC and Al7075-Al2O3 Metal Matrix Composites
The aluminum based composites are increasingly being used in the transport, aerospace, marine, automobile and mineral processing industries, owing to their improved strength, stiffness and wear resistance properties. The widely used reinforcing materials for these composites are silicon carbide, aluminum oxide and graphite in the form of particles or whiskers. The ceramic particles reinforced aluminum composites are termed as new generation material and these can be tailored and engineered with specific required properties for specific application requirements. Particle reinforced composites have a better plastic forming capability than that of the whisker or fiber reinforced ones, and thus they have emerged as most sought after material with cost advantage and they are also known for excellent heat and wear resistance applications. In this paper it is aimed to present the experimental results of the studies conducted regarding hardness, tensile strength and wear resistance properties of Al6061-SiC and Al7075-Al 2 O 3 composites. The composites are prepared using the liquid metallurgy technique, in which 2-6 wt. %'age of particulates were dispersed in the base matrix in steps of 2. The obtained cast composites of Al6061-SiC and Al7075-Al 2 O 3 and the castings of the base alloys were carefully machined to prepare the test specimens for density, hardness, mechanical, tribological tests and as well as for microstructural studies as per ASTM standards. The SiC and Al 2 O 3 resulted in improving the hardness and density of their respective composites. Further, the increased %'age of these reinforcements contributed in increased hardness and density of the composites. The microphotographs of the composites studied revealed the uniform distribution of 44 G. B. Veeresh Kumar, C. S. P. Rao, N. Selvaraj , M. S. Bhagyashekar Vol.9, No.1 the particles in the matrix system. The experimental density values were agreed with that of the theoretical density values of the composites obtained using the rule of mixture for composites. The dispersed SiC in Al6061 alloy and Al 2 O 3 in Al7075 alloy contributed in enhancing the tensile strength of the composites. The wear factor K obtained using computerized pin on disc wear tester with counter surface as EN31 steel disc (HRC60) and the composite pin as specimens, demonstrated the superior wear resistance property of the composites.
Aluminum Matrix Composites (AMCs) are emerging as advance engineering materials due to their strength, ductility and toughness. The aluminium matrix can be strengthened by reinforcing with hard ceramic particles like SiC,Al 2 O 3 , B 4 C etc.In this work The aim involved in designing metal matrix composite materials is to combine the desirable attributes of metals and Ceramics.Powder metallurgy is one of the established manufactured processes which allow products of complex geometries to be produced with tailor made properties like high strength and tolerances. P/M has replaced conventional metal forming operations due to added benefits like high material utilization, low energy consumption, less material wastage and reasonable cost, because of which it is extensively used in automobile, aerospace and many other industriesIn this work Al7075-Sic and Al6082-B 4 C metal matrix composites were fabricated using powder metallurgy technique Specimens were prepared by varying reinforcement...
International journal of engineering research and technology, 2018
Aluminum metal matrix composites (AMMC) are becoming progressively very important materials in manufacturing industries and are generally preferred due to their enhanced mechanical properties like high strength, hardness, wear resistance, corrosion resistance, fatigue strength, compressive strength etc. These are very much widely used in applications of automobile, marine, aircraft industries because of their high temperature resistance and superior strength to weight ratio. This paper attempts to view the enhancement of mechanical properties by the combination of Aluminum 6063 (Al6063) reinforced with Silicon Carbide 2% (SiC) and Graphite are fabricated by stir casting technique. The specimens are prepared with aluminum with 2% Silicon carbide and Graphite (1%, 2% and 3%). Tests have been conducted on these composites to evaluate how the tensile strength, microhardness, flexural strength, compressive strength and microstructures of the materials affect. It is observed that the abov...
International Journal of Engineering Research and Technology (IJERT), 2014
https://www.ijert.org/development-and-testing-of-metal-matrix-composite-by-reinforcement-of-sic-particles-on-al-5xxx-series-alloy https://www.ijert.org/research/development-and-testing-of-metal-matrix-composite-by-reinforcement-of-sic-particles-on-al-5xxx-series-alloy-IJERTV3IS20923.pdf This paper reviews the worldwide upsurge in metal-matrix composite research and development activities with particular emphasis on cast metal-matrix particulate composites. It involves the development of Composite material in which the desirable properties of two separate materials are combined by mechanically binding them together. The aim involved in designing metal matrix composite materials is to combine the desirable attributes of metals. Here Aluminium 5083 used as the matrix material in which SiC added as the reinforced material. Present work was focused on the comparative study of behaviour of Aluminium 5083 with SiC as reinforcement produced by stir casting method and ultrasonic assisted stir casting method. Hardness and Density tests were employed to obtain the mechanical properties of specimens by adding different percentages of SiC and trend was compared between the samples developed by stir casting method and ultrasonic assisted stir casting method.
International Journal of Engineering Research and Technology (IJERT), 2018
https://www.ijert.org/enhancing-the-mechanical-properties-of-metal-matrix-composite-by-reinforcing-aluminium-6063-with-sic-graphite https://www.ijert.org/research/enhancing-the-mechanical-properties-of-metal-matrix-composite-by-reinforcing-aluminium-6063-with-sic-graphite-IJERTCONV6IS16014.pdf Aluminum metal matrix composites (AMMC) are becoming progressively very important materials in manufacturing industries and are generally preferred due to their enhanced mechanical properties like high strength, hardness, wear resistance, corrosion resistance, fatigue strength, compressive strength etc. These are very much widely used in applications of automobile, marine, aircraft industries because of their high temperature resistance and superior strength to weight ratio. This paper attempts to view the enhancement of mechanical properties by the combination of Aluminum 6063 (Al6063) reinforced with Silicon Carbide 2% (SiC) and Graphite are fabricated by stir casting technique. The specimens are prepared with aluminum with 2% Silicon carbide and Graphite (1%, 2% and 3%). Tests have been conducted on these composites to evaluate how the tensile strength, microhardness, flexural strength, compressive strength and microstructures of the materials affect. It is observed that the above properties are found to be more improved in at 2%graphite.