CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Microstructural and basic mechanical characteristics of ZA27 alloy-based nanocomposites synthesized by mechanical milling and compocasting

Authorized Users Only
2019
Authors
Bobić, Biljana
Vencl, Aleksandar
Ružić, Jovana
Bobić, Ilija
Damnjanović, Zvonko
Article (Published version)
Metadata
Show full item record
Abstract
Particulate nanocomposites with the base of ZA27 alloy were synthesized using an innovative route, which includes mechanical milling and compocasting. Scrap from the matrix alloy and ceramic nanoreinforcements were mechanically milled using the ball-milling technique, which led to the formation of composite microparticles. The use of these particles in the compocasting process provided better wettability of ceramic nanoreinforcements in the semi-solid metal matrix, which resulted in a relatively good dispersion of the nanoreinforcements in nanocomposite castings. The presence of nanoreinforcements led to the grain refinement in the matrix of nanocomposites. The mechanical properties of the synthesized nanocomposites are improved and compared with the properties of the metal matrix. The observed increase in the hardness of nanocomposites with Al2O3 nanoreinforcements (20–30 nm) was 6.5% to 10.8%, while the yield strength of these nanocomposites has increased by 12.2% to 23.2%. The hardn...ess and compressive yield strength of the nanocomposites with Al2O3 nanoparticles (100 nm) increased by 1.7% to 8.0% and 2.3% to 8.3%, respectively. The increase in hardness of the nanocomposites with SiC nanoparticles (50 nm) was 11.5% to 20.6%, while the increase in the yield strength was 15.6% to 24.5%. The greatest contribution to the overall strengthening in the synthesized nanocomposites is the result of increased dislocation density due to the difference in coefficients of thermal expansion for the matrix alloy and nanoreinforcements.

Keywords:
Alumina / Aluminum oxide / Ball milling / Billets (metal bars) / Ceramic materials / Coefficients of thermal expansions / Compocasting process / Composite microparticles / Dislocation densities / Grain refinement / Hardness / Mechanical alloying / Mechanical characteristics / Mechanical milling / Metal–matrix nanocomposites / Milling (machining) / Nanocomposites / Nanometals / Nanoparticles / Silicon carbide / Strengthening (metal) / Strengthening mechanisms / Thermal expansion / Yield stress
Source:
Journal of Composite Materials, 2019, 53, 15, 2033-2046
Publisher:
  • Sage Publishing
Projects:
  • Development of the tribological micro/nano two component and hybrid selflubricating composites (RS-35021)
  • The effect of nano- and microconstituents on the synthesis and characteristics of novel composite materials with metal matrix (RS-172005)

DOI: 10.1177/0021998318817876

ISSN: 0021-9983

WoS: 000469805300001

Scopus: 2-s2.0-85060979056
[ Google Scholar ]
8
5
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3648
Collections
  • Radovi istraživača / Researchers' publications
Institution
IHTM

Related items

Showing items related by title, author, creator and subject.

  • The roughness analysis of metal coatings by STM technique part IV: The relation between brightness and mechanisms of metal electrodeposition / Analiza hrapavosti galvanskih prevlaka tehnikom skenirajuće tunelske mikroskopije IV deo - veza između sjaja i mehanizma elektrohemijskog taloženja metala 

    Nikolić, Nebojša D.; Rakočević, Zlatko Lj.; Popov, Konstantin I. (Belgrade, Serbia : Engineering Society for Corrosion, 2003)
  • Thermo-mechanical properties of rigid polyurethane foams with cement addition 

    Ristić, Ivan; Mićić, Vladan; Cakić, Suzana; Radičević, Radmila; Aleksić, Vojislav; Miletić, Aleksandra; Pavlović, Stefan (Society of Chemists and Technologists of Macedonia, 2016)
  • The kinetics and mechanism of methanol oxidation on Pt and PtRu catalysts in alkaline and acid media / Kinetika i mehanizam oksidacije metanola na Pt i PtRu katalizatorima u alkalnoj i kiseloj sredini 

    Lović, Jelena (Serbian Chemical Society, 2007)

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB