Structural study of Al-1. 4 at pct Fe powder produced by atomization

Journal Article · Sun Aug 15 00:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90156-M· OSTI ID:6209838

Djega-Meriadassou, C; Chekroud, S; Cizeron, G ^[1]

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1. Univ. Paris Sud, Orsay (France)

The Al[sub 1-x]Fe[sub x] alloys with small Fe content which have been studied in the past decades were mainly obtained by rapid solidification. These techniques noticeably increase the solubility of iron solute in the f.c.c. aluminium matrix, thereby reducing the formation of intermetallic compounds: depending on the quenching rate, the iron atoms may associate into clusters. It follows that the solid solution structure may look different from an ideally disordered one. For low rates of solidification, intermetallic compounds are formed and they modify the workability and chemical properties of the material. The small angle X-ray scattering technique would appear to be the most suitable to study the Fe dispersion. However, it seems that the electronic density of the obtained species is very close to that of Al so that no recent developments over the last years have been performed on this subject by that technique. Moessbauer Spectroscopy has not been extensively used to specify the various expected entities. An analysis of the microstructure of atomized powder has been carried out by electronic microscopy for an Al-4 at Pct Fe composition with powder particle size in the range lower than 50 [mu]m. Even if the structures were carefully studied versus the particle diameter, no information was elicited about the Fe distribution in the Al matrix. In the present work, results are given from X-ray diffraction, X-ray photoelectron spectrometry and Moessbauer Spectroscopy about the various iron combinations found in an Al-1.4 at Pct Fe powder prepared by atomization in air from the liquid alloy.

• OSTI ID: 6209838
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:4; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
ATOMIZATION
COHERENT SCATTERING
DATA
DIFFRACTION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
INFORMATION
INTERMETALLIC COMPOUNDS
IONIZING RADIATIONS
IRON ALLOYS
MICROSTRUCTURE
MOESSBAUER EFFECT
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHOTOELECTRON SPECTROSCOPY
POWDERS
RADIATIONS
SCATTERING
SMALL ANGLE SCATTERING
SOLIDIFICATION
SPECTROSCOPY
X RADIATION
X-RAY DIFFRACTION