Mössbauer investigation of iron in aluminium-I. Al-Fe samples

S. Nagy, A. Vértes, Z. Homonnay, L. Murgás

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Abstract

An Al-0.58 m% Fe billet was cast by semicontinuous method (melt temperature: 685°C, casting speed: 80 mm/min). The intermetallic AlFe phases formed during casting and subsequent heat treatments were investigated by Mössbauer spectroscopy. The Mössbauer parameters of the iron-containing species (i.e. dissolved iron, Al6Fe and Al3Fe) occurring in the specimens were determined by the measurement of samples specially prepared for that purpose. Possible problems of phase analysis such as the apparent orientation of Al6Fe crystallites were also considered and discussed. The Mössbauer spectra indicated that initially the cast alloy contained only Al6Fe besides Al(Fe) solid solution. Heat treatments performed at 450 and 530°C caused only some broadening in the spectrum lines of Al6Fe, but at 620°C Al6Fe transformed completely to Al3Fe after 10-15 h.

Original languageEnglish
Pages (from-to)735-739
Number of pages5
JournalActa Metallurgica
Volume35
Issue number3
DOIs
Publication statusPublished - Mar 1987

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ASJC Scopus subject areas

  • Engineering(all)

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