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    Composites Project Presentation

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    Stalan Jonathan
    This document outlines a project to develop and characterize an aluminum-based metal matrix composite. The objectives are to fabricate an aluminum composite, and test its tensile, compression, and machinability properties. The project will use stir casting to combine aluminum 2024 with aluminum oxide, graphite, and tungsten carbide reinforcements. Six composite rods will be made with varying reinforcement content from 0% to 180%. Mechanical testing will characterize the composites and determine the effect of reinforcement content on properties.

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    Composites Project Presentation

    Uploaded by

    Stalan Jonathan
    177 views15 pages
    This document outlines a project to develop and characterize an aluminum-based metal matrix composite. The objectives are to fabricate an aluminum composite, and test its tensile, compression, and machinability properties. The project will use stir casting to combine aluminum 2024 with aluminum oxide, graphite, and tungsten carbide reinforcements. Six composite rods will be made with varying reinforcement content from 0% to 180%. Mechanical testing will characterize the composites and determine the effect of reinforcement content on properties.

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    This document outlines a project to develop and characterize an aluminum-based metal matrix composite. The objectives are to fabricate an aluminum composite, and test its tensile, compression, and machinability properties. The project will use stir casting to combine aluminum 2024 with aluminum oxide, graphite, and tungsten carbide reinforcements. Six composite rods will be made with varying reinforcement content from 0% to 180%. Mechanical testing will characterize the composites and determine the effect of reinforcement content on properties.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    177 views15 pages

    Composites Project Presentation

    Uploaded by

    Stalan Jonathan
    This document outlines a project to develop and characterize an aluminum-based metal matrix composite. The objectives are to fabricate an aluminum composite, and test its tensile, compression, and machinability properties. The project will use stir casting to combine aluminum 2024 with aluminum oxide, graphite, and tungsten carbide reinforcements. Six composite rods will be made with varying reinforcement content from 0% to 180%. Mechanical testing will characterize the composites and determine the effect of reinforcement content on properties.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 15

    GOVERNMENT ENGINEERING COLLEGE

    CHAMARAJANAGAR
    DEPARTMENT OF MECHANICAL ENGINEERING

    PROJECT TOPIC :
    “DEVELOPMENT AND CHARACTERIZATION OF
    ALUMINIUM BASED MMC HYBRID COMPOSITE”

    Submitted by: guided by:


    Sahana g s dr. Mallikarjun sir
    Anitha a m Prof Mechanical Dep
    Mamatha l Gec Chamarajanagar - 571313
    Sinchana h s
    CONTENT
    Objective
    Introduction
    Classification of MMCs
    Composition of metal matrix composites
    Properties of aluminium 2024
    Methodology
    OBJECTIVES
    To fabricate Aluminium metal matrix composite.

    To characterize its mechanical properties such as tensile strength and


    compression strength.

    To obtain optimum machining parameters in order to get good surface


    finish.
    INTRODUCTION

    Composite materials are those materials which are made from two or more materials with different physical and chemical properties, when combined produce a material which is having
    different properties from the unit materials. In a composite typically, there are two constituents. One constituent act as a matrix and other constituent acts as reinforcement.
    These materials are combined in such a way that they can use of their virtues while minimising some effects of their deficiencies. So the designer can make use of tougher and lighter
    materials, with properties that can suit particular design requirements because there are so many constraints associated with the selection of conventional materials .
    METAL MATRIX COMPOSITES (MMCs)
    A metal matrix composite(MMC) is a composite material with at least
    two constituents parts, one being a metal.

    The other material may b different metal or another material, ceramic


    or organic material.
    When at least three materials are present it is called hybrid composite.

    Reinforcement material is embeded into the matrix material in order


    to change the physical properties such as strength, conductivity and
    resistance to wear etc.
    MATERIAL COMPOSITION

    Matrix used: Aluminium 2024

    Reinforcement: Aluminium oxide


    Graphite
    Tungsten carbide
    PROPERTIES OF ALUMINIUM 2024
    Mechanical Properties Metric English

    Ultimate Tensile Strength 469 MPa 68000 psi

    Tensile Yield Strength 324 MPa 47000 psi

    Shear Strength 283 MPa 41000 psi


    Fatigue Strength 138 MPa 20000 psi

    Modulus of Elasticity 73.1 GPa 10600 ksi

    Shear Modulus 28 GPa 4060 ksi


    METHODOLOGY
    STIRstirring
    Stir casting process involves CASTING:
    of melt, in which the melt is stirred
    continuously which exposes the melt surface to the atmosphere which tend to
    continuous oxidation of aluminum melt. As a result of continuous oxidation, the
    wettability of the aluminum reduces and the reinforcement particles remain
    unmixed.
    Composition of materials in casting
    SL.NO. Aluminium 2024 Aluminium oxide Tungsten carbide Graphite Cast

    01. 1000g 0g 0g 0g 1

    02. 1000g 20g 20g 20g 2

    03. 1000g 40g 40g 20g 3

    04. 1000g 40g 60g 20g 4

    05. 1000g 60g 40g 20g 5

    06. 1000g 80g 80g 20g 6


    Stir cast cylindrical rods
    Using stir casting 6 cylindrical bars are prepared by adding the
    reinforcement in the order of 0%, 6%,10%,120%,120% and
    180% in the series.
    ADVANTAGES

    • Aluminium MMCs offer a number of advantages compared


    with their base metal.
    • Higher elastic modulus and strength.
    • Lower coefficient of thermal expansion, and superior
    elevated temperature properties.
    • Improved creep resistance and rupture strength.
    • Mechanical stability, dampening, thermal management and
    reduced weight.
    APPLICATIONS

    • Aircraft and Aerospace


    • Marine fitting
    • Transport
    • Brake components
    • Couplings
    • Machine components
    • Valves
    REFERENCE
    • [1] Shivatsan, T.S, Ibrahim, I.A, Mehmed, F.A., and Lavernia, E.J., "Processing Techniques for
    Particulate Reinforced Metal Matrix Composites", Journal of Materials Science, Volume 26, pp.
    5965-5978, 1991.
    • [2] Warren, H., and Hunft ,Jr., "Automotive Applications of Metal Matrix Composites",
    Aluminum Consultants Group, Inc Danied B. Miracle, Air Force Research Laboratory Report, pp.
    1029-1032, 2004.
    • [3] Ejiofor, J., and Reddy, R.G., "Developments, Processing and Properties of Particulate AL-Si
    Composites", Journal of Materials, pp. 31-37, November, 1997.
    • [4] Taha, A.M., "Industrialization of Cast Aluminum Materials Composites", Jounral of Materials
    and Manufacturing Processes, pp. 618-641, September, 2001. http/ www.inform World.Com
    • [5] Hashim, T., Loony, L., and Hashmi, M.S.J., "Particle Distribution in Cast Metal Matrix
    Composite", Jounral of Materials Processing Technology, Part-1, Volume 123, pp. 251-257, 2003

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