Structural and magnetic investigation of mechanically alloyed Fe 10 Al 90

Marek Pękała , Dariusz Oleszak

Abstract

The Fe 10 Al 90 alloy was synthesized from high purity elements in a conventional horizontal low energy ball mill. The X - ray patterns show that the mechanical alloying (MA) results in the formation of an amorphous phase coexisting with a nanocrystalline fee solid solution. The lattice parameter of Al(Fe) solid solution after 200 h of MA is 4.034 Å being comparable with 4.05 Å for pure Al. The final average crystallite size of the synthesized solid solution is 7 nm. The DSC and X - ray diffraction reveal that for short milling periods FeAl 3 forms directly from Al and Fe whereas for longer milling periods its formation proceeds through the crystallization of amorphous phase and decomposition of Al(Fe) solid solution. The reduction of magnetic moment per Fe atom is accompanied by a monotonic suppression of the Curie temperature from 1040 to 600 K which reveals a reduction in the exchange interaction at longer MA.

Author Marek Pękała - University of Warsaw (UW) [University of Warsaw (UW)]
Marek Pękała,,
-
- Uniwersytet Warszawski
, Dariusz Oleszak (FMSE / DCFM)
Dariusz Oleszak,,
- Division of Construction and Functional Materials
Journal seriesMaterials Science Forum, ISSN 1662-9752, [0255-5476]
Issue year1997
Pages547-552
Publication size in sheets0.5
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 3104 Condensed Matter Physics; 2500 General Materials Science
Languageen angielski
Score (nominal)0
Score sourcejournalList
Publication indicators Scopus Citations = 9; WoS Citations = 6; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 0.528
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