Microstructure properties and microhardness of rapidly solidified Al64Cu20Fe12Si4 quasicrystal alloy


Karakose E. , KESKİN M.

METALS AND MATERIALS INTERNATIONAL, cilt.18, ss.257-263, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 18 Konu: 2
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1007/s12540-012-2017-3
  • Dergi Adı: METALS AND MATERIALS INTERNATIONAL
  • Sayfa Sayısı: ss.257-263

Özet

This paper presents differences in the microstructure and microhardness properties of conventional casting (ingot) and rapidly solidified Al64Cu20Fe12Si4 quasicrystal (QC) alloys. The phases present in the Al64Cu20Fe12Si4 ingot alloy were determined to be icosahedral quasicrystalline (IQC) Psi-Al65Cu20Fe15, cubic beta-AlFe, tetragonal theta-Al2Cu, and monoclinic lambda-A1(3)Fe(4) phases, whereas only IQC Psi-Al65Cu20Fe15 and cubic beta-AlFe phases were identified in the rapidly solidified alloy. The microhardness value of the melt spun alloy was measured to be approximately 790 kg/mm(2). Microhardness increases with increasing solidification rates.