Browsing by Autor "J.M. Mendoza-Duarte"

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    Effect of B 4 C Particles Addition on the Microstructure and Mechanical Performance of Some Aluminum-Based Composites
    (Oxford University Press, 2016) C. Carreño-Gallardo; J.M. Mendoza-Duarte; C. López-Meléndez; I. Estrada‐Guel; J. L. Reyes-Ronquillo; E. Uriza-Vega; R. Martínez-Sánchez
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    Mechanical and Microstructural Response of an Aluminum Nanocomposite Reinforced with Carbon-Based Particles
    (Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímer, 2016) J.M. Mendoza-Duarte; I. Estrada‐Guel; Francisco C. Robles Hernández; C. Carreño-Gallardo; C. López-Meléndez; R. Martínez-Sánchez
    The present work deals with the study of some aluminum (Al) composites reinforced with metallized-graphite (MG) particles prepared by mechanical milling and powder metallurgy routes. Density, morphology evolution and mechanical performance of composites were investigated as a function of MG concentration and milling time. The as-milled powders were characterized by X-ray diffraction and optical/electron microscopy; meanwhile, the mechanical testing was carried out on cylindrical specimens prepared from powders by powder metallurgy. Evidence reveals that high-energy ball milling induce a homogeneous dispersion of graphite nanoparticles in the Al matrix; this is related to an enhancement of hardness and strength response of studied composites. The composite sample with 0.5% MG addition (in weight) reached an increase of 40% on hardness and 50% on strength (compared with pure Al sample); nevertheless an adverse effect was observed with longer milling and/or higher MG concentration.