Microstructure evolution of atomized Al-0.61 wt pct Fe and Al-1.90 wt pct Fe alloys

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DOIResolve DOI: http://doi.org/10.1007/s11663-011-9485-6
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TypeArticle
Journal titleMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
ISSN1073-5615
Volume42
Issue3
Pages557567; # of pages: 11
SubjectAtomized powders; Dendritic growth; Hypereutectic composition; Macrostructures; Microstructure evolutions; Neutron diffraction analysis; Pattern simulation; Scanning Electron Microscope; Selected area electron diffraction; Transmission electron microscope; Cerium alloys; Electron diffraction; Electron microscopes; Electrons; Eutectics; Intermetallics; Iron alloys; Microstructure; Neutron diffraction; Scanning electron microscopy; Transmission electron microscopy; Aluminum
AbstractThe microstructure evolution of impulse atomized powders of Al-0.61 wt pct and Al-1.90 wt pct Fe compositions have been investigated with a scanning electron microscope, transmission electron microscope, neutron diffraction, and backscattering electron diffraction (EBSD). Both hypoeutectic and hypereutectic compositions demonstrated similar macrostructure (i.e., primary α-Al dendrites/cells with eutectic Al-Fe intermetallics decorated at the dendritic/cellular walls). Selected area electron diffraction (SAED) analysis and SAED pattern simulation identified the eutectic Al-Fe intermetallic as AlmFe (m = 4.0-4.4). This is verified by neutron diffraction analysis. Cubic texture was observed by EBSD on the droplets with dendritic growth direction close to «111». The possible reasons are discussed. © 2011 The Minerals, Metals & Materials Society and ASM International.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Institute for Nanotechnology (NINT-INNT)
Peer reviewedYes
NPARC number21271345
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Record identifier36aa97a8-72f0-4b70-8954-926a5179bcc9
Record created2014-03-24
Record modified2016-05-09
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