Structure development in rapidly solidified Al-Fe-V-Si ribbons
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol.373, pp.90-98, 2004 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 373
- Publication Date: 2004
- Doi Number: 10.1016/j.msea.2003.12.034
- Journal Name: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.90-98
- Keywords: microcrystalline Al-Si alloys, supersaturated Al matrix, quaternary silicide phases, differential scanning calorimetry, x-ray diffraction, Mossbauer spectroscopy, CRYSTAL STRUCTURE, IRON ALLOYS
- Middle East Technical University Affiliated: Yes
Abstract
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 Mossbauer 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)(1.84)Si and lattice parameter 1.2578(8) nm. (C) 2004 Published by Elsevier B.V.