Structure development in rapidly solidified Al–Fe–V–Si ribbons

Microcrystalline Al–8.5 wt.% Fe–1.06 wt.% V–2.75 wt.% Si, ribbon was produced by a planar flow casting (PFC) technique. Environmental scanning electron microscopy, X-ray diffraction and Mössbauer spectroscopy proved that the polycrystalline alloy consists of a supersaturated Al matrix and quaternary...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2004-05, Vol.373 (1), p.90-98
Main Authors: Yaneva, S, Kalkanlı, A, Petrov, K, Petrov, R, Yvan Houbaert, Ir, Kassabov, S
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Differential scanning calorimetry
Exact sciences and technology
Materials science
Metals. Metallurgy
Microcrystalline Al–Si alloys
Mössbauer spectroscopy
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Quaternary silicide phases
Solidification
Supersaturated Al matrix
X-ray diffraction
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Summary:Microcrystalline Al–8.5 wt.% Fe–1.06 wt.% V–2.75 wt.% Si, ribbon was produced by a planar flow casting (PFC) technique. Environmental scanning electron microscopy, X-ray diffraction and Mössbauer spectroscopy proved that the polycrystalline alloy consists of a supersaturated Al matrix and quaternary Al–S–Fe–V dispersoids. The observed single exothermal peak in the differential scanning calorimetry curves was ascribed to partial decomposition of the Al supersaturated solid solution. After prolonged heating at 873 K, the microcrystalline alloy still consists of supersaturated Al matrix with lattice parameter 0.40485(4) nm, reinforced by silicide particles with chemical formula Al 13.18(Fe,V) 1.84Si and lattice parameter 1.2578(8) nm.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2003.12.034