IJERT-Enhancing the Mechanical Properties of Metal Matrix Composite by Reinforcing Aluminium 6063 with Sic & Graphite (original) (raw)
Related papers
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...
2016
All rights reserved by www.ijsrd.com 821 Effect on Mechanical Properties of Aluminium 6063 Reinforced with Silicon Carbide – Graphite Hybrid Composites Vikas Bhoria N.M Suri Sumankant Department of Production & Industrial Engineering PEC University of Technology, Chandigarh Abstract— The use of multiple reinforcements (hybrid) has been growing interest because of increase in mechanical as well as tribological properties. The present work focuses on Al6063 composite reinforced with Silicon Carbide(SiC) and graphite(Gr) hybrid as a to study the change in mechanical properties of composite material. Al6063 find its applications mainly in architectural, pipes and aluminium furniture. Hardness, tensile and compressive strength test has been performed to study the influence in properties of composite developed using liquid metallurgy reinforced with variations of SiC and Gr (2+2) %, (4+2) % and (6+2%). The microscopic images were taken to analyze the distribution of particles in microstru...
Investigation of Mechanical Characterization on Al-7075 Reinforced with Silicon Carbide and Graphite
International Journal of Scientific Research in Science and Technology, 2023
Composite materials defined as two or more chemically different constituents that are combined microscopically to yield a useful material. The properties of new material are significantly different than that of constituents. This can be classified into three different types, which are metal matrix composite, polymer matrix composite, ceramic matrix composite. In this journal we work is on metal matrix composite. Aluminium Metal Matrix Composites (AMMC) have good mechanical properties which has various applications like automobile, military industries, aerospace and others due to light weight, thermal properties, stiffness, high mechanical strength corrosion resistance. The present work deals with the preparation and mechanical characterization of Aluminium 7075 metal matrix reinforced with silicon carbide and graphite. Composition can be made 3% graphite and silicon carbide variations like 2%, 4%, and 6% with Aluminium. To prepare this material and test mechanical characterization like tensile strength, compressive strength and hardness
Experimental Study of Mechanical Properties on Al 6063 Composite Reinforced with Silicon Carbide
2019
Abstract: Composite materials have high performance than base metal like, high strength, high wear property and can withstand high temperature. The metal matrix composite (MMCs) materials has been developed using stir casting technique. Fabrication of Al 6063 alloys based metal matrix hybrid composite which is reinforced with 2%wt of Graphite and in varying composition of Sic by 9wt%, 12wt%,14wt% and 16wt%.This study has been done to find the variation in the mechanical properties such as hardness, tensile strength, impact energy of MMCs formed.
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.
ABSTRACT : In the present investigation, the study on mechanical properties of Aluminum Hybrid Matrix Composites (AMCs) reinforced with alumina (Al2O3), silicon carbide (Sic) and graphite (Gr) particles. Al6063 alloy is used as the matrix material with varying the reinforcement of alumina at fixed quantity of 5 wt% SiC and 5 wt% of graphite. The composites were fabricated by stir casting equipment methodology with controlled speed and feed parameters. Hardness is measured by using Brinell hardness equipment and tensile properties were measured by using universal testing machine and it is compared with aluminum alloy. There was a great advancement in hardness and tensile properties by changing the compositions. The Sic and Al2O3 resulted in improving the hardness and density of their respective composites. Further, the changing the compositions of these reinforcements contributed in increased hardness and density of the composites.
Tribologia - Finnish Journal of Tribology, 2020
The aluminium metal matrix composite reinforced with ceramic material of Silicon carbide (SiC) has good mechanical properties. However, aluminium based ceramic composites require improvements in their lubrication and tribological properties. In this study an attempt is made in the development of a new material through powder metallurgy technique by the addition of Graphite, which acts as a solid lubricant. This work investigated the influence of graphite on the wear behaviour of Al 7075/SiC /X wt.% graphite(X=0, 5 and 10) hybrid composite. The investigation reveals the effectiveness of incorporation of graphite in the composite for gaining wear reduction. The Al 7075 (aluminium alloy 7075) reinforced with SiC –graphite were investigated. The composites were fabricated using powder metallurgy route. The microstructures, material combination, wear and friction properties were analysed by scanning electron microscopy, XRD, and pin-on-disc wear tester. The newly developed aluminium compo...
IOP Conference Series: Materials Science and Engineering, 2018
Aluminum reinforced with silicon carbide composites areextensively used in automobile industries and aerospaceowing to their favourable microstructure and improved mechanical behaviour with respect to pure aluminium but at a lower cost. Aluminium is remarkable for the low density and its ability to resist corrosion. The aim of present study istoevaluate the mechanical and microstructural properties of aluminum with silicon carbide (average particle size 30-45μm) reinforced in varying weight percentages (wt %) ranging from 0-15 wt% in a step of 5% each. Ultimate tensile strength, micro hardness and density of the fabricated composites were investigated as a function of varying SiC wt%. Microstructure analysis was carried out on casted composites using optical microscopy and scanning electron microscopy. From micrographs it is clear that fair distribution of reinforcing particles in the matrix and also observed some clustering and porosity in the cast material. Results revealed that, the addition of SiC reinforcement in the aluminum matrix increases the hardness and ultimate tensile strength gradually from 23 HV to 47 HV and 84 MPa to 130 MPa respectively.
Influence of Silicon Carbide/Graphite addition on properties of AA6082 reinforced composites
Australian Journal of Mechanical Engineering, 2018
AA6082 matrix hybrid composites reinforced with different weight percentages (wt. %) of (SiC + Gr) ceramic particulates by conventional stir casting process is manufactured. The weight percentage of ceramic powder is varied from 4 wt. % to 12 wt. % in a stage of 4 wt. %. The microstructures, physical properties such as density and porosity, as well as mechanical properties like hardness and tensile strength of the fabricated hybrid composites, are analysed. The optical micrographs reveal the uniform distribution of (SiC + Gr) ceramic particulates in the aluminium matrix. Density and porosity of hybrid composite increases from 2.69 to 2.75 g/cm 3 and 0.37% to 1.23% with increase in weight percentage of (SiC + Gr) ceramic particulates in the aluminium matrix from 0 wt. % to 12 wt. % respectively. Both the hardness and ultimate tensile strength have enhanced from 52 to 84 VHN and 163 to 189 MPa, respectively, with a reduction in percentage elongation from 8.6 to 5.2 with rise in weight percentage of (SiC + Gr) ceramic particulates in the aluminium matrix from 0 wt. % to 12 wt. %, respectively.
2014
The development of AA6061 aluminum matrix composites is of great interest in industrial applications for lighter materials with high specific strength, stiffness and wear resistance. In this paper we examine the effects of reinforced Al6061 alloy with 2 wt%, 4 wt%, 6wt% of SiC and 5 wt % Al2O3; being fabricated by liquid metallurgy (stir cast) method. The mechanical properties including hardness and wear resistances of the unreinforced alloy and reinforced have been measured. It has been observed that the addition of reinforced materials significantly improves wear resistances and hardness properties as compared with that of unreinforced matrix.