• V Rajkovic

      Articles written in Bulletin of Materials Science

    • Multiple strengthening mechanisms in nanoparticle-reinforced copper matrix composites

      D Bozic J Stasic B Dimcic M Vilotijevic V Rajkovic

      More Details Abstract Fulltext PDF

      The multiple hardening mechanisms of a copper matrix have been presented and discussed. The prealloyed ball milled Cu–3 wt.%Al and the atomized Cu–0.6 wt.%Ti–2.5 wt.%TiB2 powders have been used as starting materials. Dispersoid particles Al2O3 and TiB2 were formed in situ. The powders have been hot consolidated. Optical microscopy, SEM, TEM, and X-ray diffraction analysis were performed for microstructural characterization. Increase in microhardness of Cu–3 wt.%Al compacts is a consequence of the crystallite size refinement and the presence of Al2O3 particles. High hardening of Cu–0.6 wt.%Ti–2.5 wt.%TiB2 is a consequence of the presence of modular structure, Cu4Ti$_{(m)}$, and TiB2 particles.

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