SEM and TEM Studies on <i>In-Situ</i> Cast Al–TiC Composites

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  • Maziarz Wojciech
    Institute of Metallurgy and Materials Science, Polish Academy of Sciences
  • Wójcik Anna
    Institute of Metallurgy and Materials Science, Polish Academy of Sciences
  • Bobrowski Piotr
    Institute of Metallurgy and Materials Science, Polish Academy of Sciences
  • Bigos Agnieszka
    Institute of Metallurgy and Materials Science, Polish Academy of Sciences
  • Szymański Łukasz
    AGH, University of Science and Technology, Faculty of Foundry Engineering
  • Kurtyka Paweł
    Pedagogical University, Institute of Technology
  • Rylko Natalia
    Pedagogical University, Institute of Technology
  • Olejnik Ewa
    AGH, University of Science and Technology, Faculty of Foundry Engineering

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  • SEM and TEM Studies on In-Situ Cast Al-TiC Composites

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Abstract

<p>This work concerns microstructure investigation of aluminum based composites strengthened with the TiC nanoparticles. The composites were fabricated by the casting method combined with in-situ formation of TiC particles. Transmission electron microscopy observation shown that the average size of TiC particles was close to 140 nm. HRTEM investigation of the interface between Al matrix and TiC particles shown the existence of misfit dislocation located in the Al-matrix, 2 nm far from interface boundary. Two other, bigger kinds of particles with size of several micrometers and blocky shape of α-Al2O3 and TiAl3 phases were also identified in the investigated composites which can influence both strengthening mechanism and plasticity.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 60 (5), 714-717, 2019-05-01

    The Japan Institute of Metals and Materials

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