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Damage mechanisms in aluminum-matrix composites reinforced with nano-alumina particles

  • Azam Ebrahimnejad and Seyed Abdolkarim Sajjadi
Published/Copyright: October 15, 2015
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 106 Issue 10

Abstract

In this research, an examination of the effects of fraction of particulate nano-sized alumina (0, 2, 5, 10, 15 and 20 wt.%) on the mechanical properties and fracture mechanism of Al–Al2O3 nano-composite has been carried out. The samples were uniaxially tested at room temperature and sample sections were analyzed using scanning electron microscopy. The results showed that the fracture mode of the composites was changed by volume fraction of the reinforcement particles. The main damage mechanisms observed in the specimens were clustering and microvoid formation, crack branching and crack deflection.

Keywords: Al-matrix composite; Nano-alumina particles; Powder metallurgy; Damage mechanism
*Correspondence address, Prof. Seyed Abdolkarim Sajjadi, Dept. of Materials Science and Engineering, Ferdowsi University of Mashhad, Vakil-abad Blvd., Mashhad, Iran, Tel.: +98-38763305, Fax: +98-38763305, E-mail:

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Received: 2014-12-14
Accepted: 2015-04-30
Published Online: 2015-10-15
Published in Print: 2015-10-14

© 2015, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111277
Keywords for this article
Al-matrix composite; Nano-alumina particles; Powder metallurgy; Damage mechanism

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. On the widths of the hysteresis of mechanically and thermally induced martensitic transformations in Ni–Ti-based shape memory alloys
  5. The effects of external compressive stress on the kinetics of low temperature bainitic transformation and microstructure in a superbainite steel
  6. The effect of compressing pressure on the microstructure and properties of W-10 wt.% Cu composite
  7. Simulation of dendritic growth of Al-4 wt.% Cu alloy from an undercooled melt
  8. Effects of contact pressure and sliding distance on the lubricated friction and wear properties of Zn-25Al-3Cu alloy: A comparative study with SAE 65 bronze
  9. Electrochemical behaviour of stainless steel in acidic fluoride media
  10. Quick fabrication of appropriate morphology and composition CoFe films with desirable microwave properties
  11. Piezo-absorbing effect of microwave absorbing composites with carbonyl iron particles as the filler
  12. Nanocomposite based on polyaniline emeraldine-base and α-Al2O3: A structural characterization
  13. Effect of Cr3C2 content on the microstructure and properties of Mo2NiB2-based cermets
  14. Short Contributions
  15. Damage mechanisms in aluminum-matrix composites reinforced with nano-alumina particles
  16. Synthesis of ultrafine powder of vanadium carbide V8C7 by microwave heating
  17. People
  18. Prof. Dr. Werner Skrotzki on the occasion of his 65th birthday
  19. DGM News
  20. DGM News
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