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Fabrication of Al–WC gradient nano-composite via centrifugal casting method

  • Magid Arefkhani , Mansour Razavi , Mohammad Reza Rahimipour , Aida Faeghinia and Ali Reza Firoozbakht
Published/Copyright: July 8, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 7

Abstract

In this work, fabrication and characterization of aluminum gradient composites reinforced by nano-particles of tungsten carbide via the centrifugal casting method were studied. In order to prepare a mixture of aluminum and tungsten carbide powders, a high energy planetary ball mill was used. The master-alloy was added to A356 aluminum matrix by horizontal centrifugal casting at different rotation speeds to synthesize Al-5 wt.% WC. The results of X-ray diffraction and scanning electron microscopy analysis confirmed a homogeneous powder in nanometer scale through mechanical milling. Centrifugal casting at speeds of up to 1300 RPM is a suitable method for production of Al–WC gradient nano-composites. By increasing the rotation speed, reinforcement phases are transmitted into the outer layers of cast samples. An agglomeration of hard WC phase leads to improvement of surface hardness and wear resistance.

Keywords: Nano-composite; Centrifugal casting; Wear; Hardness; Mechanical-milling
∗Correspondence address, Mansour Razavi, Ceramic Department, Materials and Energy Research Center (MERC), P.O. Box 14155-4777, Tehran, Iran, Tel: +98 26 36280040-9, Fax: +98 26 36201888, E-mail:

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Received: 2018-11-04
Accepted: 2019-02-11
Published Online: 2019-07-08
Published in Print: 2019-07-15

© 2019, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111785
Keywords for this article
Nano-composite; Centrifugal casting; Wear; Hardness; Mechanical-milling

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. 3D morphology characterization of graphite and its effect on the thermal conductivity of vermicular graphite iron
  5. Experimental liquidus studies of the Zn–Fe–Si–O system in air
  6. Phase transitions in copper–silver alloys under high pressure torsion
  7. High-temperature oxidation behavior of low sulfur martensitic stainless steel 1Cr13Mo containing cerium
  8. Microstructure and properties of Cu-bearing carbidic austempered ductile iron
  9. Fabrication of Al–WC gradient nano-composite via centrifugal casting method
  10. Properties of vacuum-laser-welded Ti-based bulk metallic glass and Zr-based bulk metallic glass composite
  11. Optimal design and characterization of novel biomedical Zr-based alloys for hard tissue substitution
  12. The influence of Mo/B atomic ratio on microstructural evolution and mechanical properties of Mo2FeB2-based cermets
  13. Piezo-spectroscopic and tribological characterization of diffusion bonded oxide laminate composite ceramics
  14. Short Communications
  15. ZnO-modified SnO flower-like microstructures with enhanced photocatalytic performance
  16. DGM News
  17. DGM News
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