Intercalated Intermetallic Compounds AlTi3 and Fe2Ti in Microrods and Microtubes Obtained by Invariant Reaction of Mechanically Milled System Al43Ti36Fe21

This paper reports the production of intermetallic microrods and microtubes from the decomposition of an intermetallic compound in an AlTiFe system. The intermetallic compound was obtained by mechanosynthesis of elemental powders of Al, Ti and Fe over 300 h at 400 rpm, sintering from compacted powde...

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Bibliographic Details
Published in:Materials 2019-11, Vol.12 (23), p.3806
Main Authors: Díaz Barriga Arceo, Lucía G., González Reyes, Leonardo, Rivera Olvera, Jesús Noé, Medina Ovando, Abraham, Garibay Febles, Vicente
Format: Article
Language:English
Subjects:
Alloys
Argon
Composite materials
Decomposition
Ductility
Heat
High resolution electron microscopy
Hydration
Intermetallic compounds
Intermetallic phases
Iron aluminides
Morphology
Process controls
Raw materials
Sintering (powder metallurgy)
Solidification
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Summary:This paper reports the production of intermetallic microrods and microtubes from the decomposition of an intermetallic compound in an AlTiFe system. The intermetallic compound was obtained by mechanosynthesis of elemental powders of Al, Ti and Fe over 300 h at 400 rpm, sintering from compacted powder particles at 300 MPa per minute and at 900 °C for 3600 s in an argon atmosphere. The milled and sintered samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The intermetallic AlTi3 and Fe3Al phases were obtained during the milling process. After sintering, a decomposition of these intermetallic phases was found—Al3Ti0.75Fe0.25, Al3Ti, FeTi, AlTi3, Ti9Al23, Fe2Ti, Al86Fe14 and Al0.4Fe0.6. As a result of the decomposition, we observed the formation of hexagonal rods with intercalated phases of AlTi3 and Fe2Ti.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma12233806