THE ICOSAHEDRAL PHASE OF Al63Cu25Fe12 SYSTEM
DOI:
https://doi.org/10.4025/revtecnol.v28i1.46138Keywords:
lcosahedral Phase, Characterization, Quasicrystal Al63Cu25Fe12.Abstract
The present work aimed to characterize the microstructure of the icosahedral phase (quasicrystalline phase-ϕ) of the system with stoichiometric composition of the quasicrystal Al63Cu25Fe12. The ternary alloy with nominal composition of Al63Cu25Fe12 was processed by mechanical alloying (MA) as a viable solid state processing method for producing various metastable and stable quasicrystalline phases. The structural characterization of the obtained samples was performed by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM), while the elemental composition of the chemical elements Al, Fe and Cu were determined by X-ray spectroscopy technique of dispersive energy (EDS). According to the results of XRD, the diffraction patterns of Al63Cu25Fe12 showed the presence of β-Al(Fe, Cu) and λ-Al13Fe4 phases coexist with the thermodynamic ϕ-phase quasicrystalline. Finally, elemental analysis indicates that during alloy synthesis there is little variation of the ideal composition. The results indicate that alloys with high percentage of icosahedral phase can be obtained by casting in the air.Downloads
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References
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J.C. Physical Vapor Deposition Route for Production of Al-Cu-Fe-Cr and Al-Cu-Fe
Quasicrystalline and Approximant Coatings. Surface and Coatings Technology 191, p.96-
101, 2005.
DUN,D.; LIU,H.; HOUA,L.; XUE,L.; DOU,L.; YANG,W.; ZHAO,Y.;SHEN,B.
Ductile Co–Nb–B bulk metallic glass with ultrahigh strength. Journal of Non-Crystalline
Solids 386. pp.121–123, 2014.
SHECHTMAN, D.; BLECH, I.; GRATIAS, D.; CAHN, J.W. Metallic Phase with
Long-Range Orientational Order and No Translational Symmetry. Physical Review Letters
53. p.1951-1953,1984.
TSAI, A.P. Discovery of Stable Icosahedral Quasicrystals: Progress in
Understanding Structure and Properties. Chemical Society Reviews 42. p5352-5365,2013.
YIN,S.; LI,C.; BLANB,Q.; LUA,M. Effect of composition on the formability of
quasicrystalline phase in mechanically alloyed Al–Cu–Fe powders. Materials Science and
Engineering A 496, p. 362-365, 2008.
YOSHIOKA, A.; EDAGAWA, K.; KIMURA, K.; Takeuchi, S. Production of High-
Quality Thin-Film Samples of Al-Cu-Fe Icosahedral Quasicrystal. Japanese Journal of
Applied Physics 34(3), p.1606-1609,1995.
ROSAS, G.; PEREZ R. On the transformations of the ψ-AlCuFe icosahedral phase.
Material Letters 47.p. 225-230,2001.
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2019-11-09
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How to Cite
THE ICOSAHEDRAL PHASE OF Al63Cu25Fe12 SYSTEM. (2019). Revista Tecnológica, 28(1), 51-56. https://doi.org/10.4025/revtecnol.v28i1.46138
