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High-strength and thermally stable Al – CeO2 composite produced by means of mechanical alloying

  • Tomasz Skrzekut , Anna Kula , Ludwik Blaz , Grzegorz Wloch and Makoto Sugamata
Published/Copyright: March 8, 2014
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 105 Issue 3

Abstract

The effect of temperature on both mechanical and structural features of a new Al-based metallic composite reinforced with fine CeO2 particles was the primary objective of the research work. Mechanically alloyed Al – CeO2 composite was manufactured from high purity Al and CeO2 powders. The powders were milled under argon atmosphere and then consolidated using hot pressing, vacuum degassing and hot extrusion methods. Hot compression tests revealed high mechanical properties of the material, which were ascribed to the very fine-grained structure of the composite. Transmission electron microscopy observations were performed on as-extruded material and samples annealed at 773 K. It was found that the composite structure is relatively stable at 773 K in comparison to Al-based composites reinforced with other heavy-metal oxides reported in literature.

Keywords: Mechanical alloying; Metallic composite; High temperature deformation; Aluminum composite
* Correspondence address, Prof. dr hab. inz. Ludwik Blaz, AGH-University of Science and Technology, 30 – 059 Cracow, Poland, Tel.: +48-12-6172648, E-mail:

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Received: 2013-07-15
Accepted: 2013-09-27
Published Online: 2014-03-08
Published in Print: 2014-03-11

© 2014, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111019
Keywords for this article
Mechanical alloying; Metallic composite; High temperature deformation; Aluminum composite

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Twinning dislocation and twin propagation process in a nickel-base single crystal TMS-82 superalloy
  5. Relationship between austenite stability and martensite formation in modified 9Cr-1Mo steel
  6. The influence of brazing temperature and surface roughness on the wettability of reactive brazing alloys
  7. Thermodynamic modelling of the “Cu2O”–SiO2, “Cu2O”– CaO, and “Cu2O”– CaO – SiO2 systems in equilibrium with metallic copper
  8. The effect of annealing temperature on the corrosion behavior of silver alloyed 2205 duplex stainless steel
  9. Effect of rate of deformation on electromagnetic radiation during quasi-static compression of sintered aluminium preforms
  10. Temperature effect on decorative gold coatings obtained from electrolyte based on mercaptotriazole – comparison with cyanide
  11. High-strength and thermally stable Al – CeO2 composite produced by means of mechanical alloying
  12. Enhancing photocatalytic activity of ZnO nanostructures by doping with Ce+4 ions prepared in water using ultrasonic irradiation
  13. Modified hyperbranched epoxy/clay nanocomposites: A study on thermal, antimicrobial and biodegradation properties
  14. Short Communications
  15. Synthesis of carnallite crystal from KCl – MgCl2 solutions and its characterization
  16. Microwave synthesis of ultrafine and nanosized powders of tungsten oxide and carbide
  17. DGM News
  18. DGM News
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