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


Yaneva S., Kalkanli A., Petrov K., Petrov R., van Houbaert I., Kassabov S.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol.373, pp.90-98, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 373
  • Publication Date: 2004
  • Doi Number: 10.1016/j.msea.2003.12.034
  • Title of Journal : MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
  • 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

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.