The Microstructure and Hardness of Al2O3 Particle Reinforced Composite

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Şahin Y., Öksüz K. E.

The 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE’2012, Paris, Fransa, 7 - 08 Temmuz 2012, cilt.232, ss.39-44 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 232
  • Doi Numarası: 10.4028/www.scientific.net/amm.232.39
  • Basıldığı Şehir: Paris
  • Basıldığı Ülke: Fransa
  • Sayfa Sayıları: ss.39-44
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

Aluminium alloys (Al2014 and Al2124 alloy) and their composites containing 10wt.%

Al2O3 with 3 μm and 43 μm sizes of particles have been produced by powder metallurgy (PM)

method and the microstructure and hardness were investigated. Scanning electron microscopy

(SEM) investigation showed a nearly uniform distribution of the Al2O3 particles within the Al2124

alloy matrix although some porosities were found in the Al2014 alloy matrix. Furthermore, it was

found that the macrohardness of Al2124 alloy composite improved highly in comparison to that of

Al2014 alloy due to fine of microstructure and increased hardness. The hardnesses of both MMCs

increased with increasing the particle sizes.

Keywords: Al2014 alloy; Al2124 alloy; Al2O3; Powder metallurgy; Metal matrix composite;

Hardness.