The Effect of Transition Metals on Quasicrystalline Phase Formation in Mechanically Alloyed Al65Cu20Fe15 Powder

The effect of replacing iron with transition metals (M = Mn, Cr, Co) on the microstructure of mechanically alloyed Al65Cu20Fe15 quasicrystalline powder was examined by X-ray diffraction and transmission electron microscopy methods. Powders of various compositions were milled in a high-energy planeta...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2020-01, Vol.65 (3), p.1129-1133
Main Authors: Mitka, M, Kalita, D, Góral, Anna, Lityńska-Dobrzyńska, L
Format: Article
Language:English
Subjects:
al-cu-fe
Alloy powders
Alloys
Aluminum
Atoms & subatomic particles
Ball milling
Ball mills
Chromium
Cobalt
Composition
Copper
Icosahedral phase
Iron
Manganese
Mechanical alloying
Metals
Planetary rotation
Powder metallurgy
Process controls
quasicrystal
Transition metals
Transmission electron microscopy
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Summary:The effect of replacing iron with transition metals (M = Mn, Cr, Co) on the microstructure of mechanically alloyed Al65Cu20Fe15 quasicrystalline powder was examined by X-ray diffraction and transmission electron microscopy methods. Powders of various compositions were milled in a high-energy planetary ball mill up to 30 hours at a rotation speed 350 rpm using WC milling media. The amount of the fourth additions was constant in all powders and Fe atoms were replaced with Mn, Cr or Co in a 1:1 ratio, while the content of the Al and Cu was selected in two ways: they remained the same as in the initial ternary Al65Cu20Fe15 alloy or changed to obtain e/a ratio = 1.75 (optimal for icosahedral quasicrystalline phase). Quasicrystalline phase formed in the quaternary Al65Cu20Fe7.5M7.5 powders, whereas in the second group of compositions only crystalline phases were identified.
ISSN:1733-3490
2300-1909
DOI:10.24425/amm.2020.133229