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Friction

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Erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements

  • Aleksandar Vencl
  • Ilija Bobić
  • Biljana Bobić
  • Kristina Jakimovska
  • Petr Svoboda
  • Mara Kandeva
Open Access
Research Article
  • 27 Downloads

Abstract

Metal matrix nanocomposites (MMnCs) comprise a metal matrix filled with nanosized reinforcements with physical and mechanical properties that are very different from those of the matrix. In ZA-27 alloy-based nanocomposites, the metal matrix provides ductility and toughness, while usually used ceramic reinforcements give high strength and hardness. Tested ZA-27 alloy-based nanocomposites, reinforced with different types (SiC and Al2O3), amounts (0.2 wt.%, 0.3 wt.%, and 0.5 wt.%) and sizes (25 nm, 50 nm, and 100 nm) of nanoparticles were produced through the compocasting process with mechanical alloying pre-processing (ball milling). It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to the formation of a finer structure in the nanocomposites matrix and an improvement in the basic mechanical properties (hardness and compressive yield strength) through the enhanced dislocation density strengthening mechanism. Solid particle erosive wear testing demonstrated that these improvements were followed with an increase in the erosive wear resistance of tested nanocomposites, as well. Additionally, by analyzing the influences of type, amount, and size of nanoparticles on the erosive wear resistance of nanocomposites, it was demonstrated that there is an optimal amount of nanoparticles, which in our case is 0.3 wt.%, and that the presence of SiC nanoparticles and smaller nanoparticles in nanocomposites had more beneficial influence on erosive wear resistance.

Keywords

ZA-27 alloy nanocomposites nanoparticles compocasting fractography erosive wear 

Notes

Acknowledgements

This work has been performed as a part of activities within the projects TR 34028, TR 35021, and OI 172005. These projects are supported by the Republic of Serbia, Ministry of Education, Science and Technological Development, whose financial help is gratefully acknowledged. Petr Svoboda acknowledges the project LO1202, funded by the MEYS under the National Sustainability Programme I. Mara Kandeva acknowledges the project ДН 07/28-15.12.2016, funded by the National Science Fund of the Ministry of Education and Science, Bulgaria. Collaboration through the CEEPUS network CIII-BG-0703 and the COST action CA15102 is also acknowledged.

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Copyright information

© The author(s) 2018

Authors and Affiliations

  • Aleksandar Vencl
    • 1
  • Ilija Bobić
    • 2
  • Biljana Bobić
    • 3
  • Kristina Jakimovska
    • 4
  • Petr Svoboda
    • 5
  • Mara Kandeva
    • 6
  1. 1.Faculty of Mechanical EngineeringUniversity of BelgradeBelgradeSerbia
  2. 2.Institute of Nuclear Sciences “Vinca”University of BelgradeBelgradeSerbia
  3. 3.Institute of Chemistry, Technology and MetallurgyUniversity of BelgradeBelgradeSerbia
  4. 4.Faculty of Mechanical Engineering in SkopjeSs. Cyril and Methodius UniversitySkopjeMacedonia
  5. 5.Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic
  6. 6.Faculty of Industrial TechnologyTechnical University of SofiaSofiaBulgaria

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