The Microstructure of Quasicrystalline Al-Cu-Fe Alloys Doped with Tungsten

Wojciech Gurdziel; Jacek Krawczyk; Włodzimierz Bogdanowicz

doi:10.4028/www.scientific.net/SSP.203-204.372

Paper Titles

Microstructure Characterization of Superfine WC-Co Powders
p.351

Sigma Phase Precipitations in Duplex Steel SAF 2205
p.355

Microstructure of the Fe-Ni-P Melt-Spun Ribbons Produced from the Single-Chamber and from the Double-Chamber Crucibles
p.361

Microstructural Aspect of Ageing Process of GP91 Cast Steel
p.368

The Microstructure of Quasicrystalline Al-Cu-Fe Alloys Doped with Tungsten
p.372

The Fracture Morphology of Composites with Quasicrystalline Phase
p.376

Structural Studies of the Relaxed Amorphous Phase in the Fe₈₁B₁₄Nb₅ Alloy
p.380

The Study of Local Structure of Amorphous Fe-Co-B-Si-Nb Alloy by Atomic Pair Distribution Function
p.386

Mechanical Synthesis and Heat Treatment of Ni₇₅Ti₂₅ Alloy
p.390

HomeSolid State PhenomenaSolid State Phenomena Vols. 203-204The Microstructure of Quasicrystalline Al-Cu-Fe...

The Microstructure of Quasicrystalline Al-Cu-Fe Alloys Doped with Tungsten

Abstract:

The microstructure of Al₆₅Cu₂₀Fe₁₄ (numbers indicate at.%) alloy doped with 1 at.% of W was studied. The selected alloy composition should allow to obtain the quasicrystalline icosahedral phase after solidification process. The bulk samples were obtained in two stages. At first, the synthesis of alloy through premelting of component elements in induction furnace and then, the directional solidification by the Bridgman method were performed. The morphology of selected areas of the samples were studied using Scanning Electron Microscope equipped with energy dispersive X-ray spectroscope, which was used to examine chemical compositions of each analysed areas. Additionally the X-ray powder diffraction was used to identify the phases present in the alloys. It was stated that the filaments of tungsten were present in the alloys. The filaments have thickness ranged from 0.01 to 2.5 μm. As a result of investigation, the arrangement of filaments in the material was determined.