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    Wire EDM Mechanism of MMCs with the Variation of Reinforced Particle Size

    251384.pdf (1.482Mb)
    Access Status
    Open access
    Authors
    Pramanik, Alokesh
    Littlefair, G.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Pramanik, A. and Littlefair, G. 2016. Wire EDM Mechanism of MMCs with the Variation of Reinforced Particle Size. Materials and Manufacturing Processes. 31 (13): pp. 1700-1708.
    Source Title
    Materials and Manufacturing Processes
    DOI
    10.1080/10426914.2015.1117621
    ISSN
    1042-6914
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/52139
    Collection
    • Curtin Research Publications
    Abstract

    The size of reinforced particles notably affects the electro-discharge machining (EDM) of metal matrix composites (MMCs). This paper explores the mechanism of wire EDM of MMCs with different sizes of reinforced particles as well as the corresponding unreinforced matrix material. The mechanisms of material removal, surface generation, and taper kerf formation were investigated. This study shows that the particles’ ability to protect matrix materials from the intense heat of electric arc controls the material removal rate, surface generation, and taper of kerf. The low melting point matrix material is removed very easily, but the heat resistance reinforced particles delay the removal of material and facilitate the transfer of the workpiece material to wire electrode and vice versa. Thus, the material stays longer in touch with intense heat and affects the surface generation, wire electrode wear, and width of the kerf.

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