Morphology of Tungsten Growth Forms in Quasicrystalline Al65Cu20Fe14W Alloys

Wojciech Gurdziel; Jacek Krawczyk; Włodzimierz Bogdanowicz; Grzegorz Dercz

doi:10.4028/www.scientific.net/SSP.231.87

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Morphology of Tungsten Growth Forms in Quasicrystalline Al₆₅Cu₂₀Fe₁₄W Alloys

Abstract:

The growth morphology and arrangement of tungsten and β-phase (Al (Fe, Cu)) in Al‑Cu‑Fe‑W alloy were analyzed. The composition of Al₆₅Cu₂₀Fe₁₄W₁ (at.%) was used for preparation of ingots containing the icosahedral quasicrystalline phase.The ingots were obtained in a two-stage process. At the first stage the induction melting of the elements and preliminary homogenization by mechanical mixing were carried out. The second stage was realized by vertical Bridgman technique of directional crystallization. The X-ray phase analysis, optical and scanning electron microscopy (SEM) observations and chemical analysis were performed. It was stated that the whiskers of tungsten were irregularly distributed in the volume of ingots. They often form a clump-like agglomerations. The whiskers have different diameters and length. Minimal diameter of the whiskers was about 10 – 100 nm and maximal – several dozen micrometers. The whiskers of tungsten formed a clump-like frames on which the membrane form of β-phase was stretched out or a non-planar oval forms.

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Solid State Phenomena (Volume 231)

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87-92

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https://doi.org/10.4028/www.scientific.net/SSP.231.87

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June 2015

Authors:

Wojciech Gurdziel*, Jacek Krawczyk, Włodzimierz Bogdanowicz, Grzegorz Dercz

Keywords:

Al-Cu-Fe Alloy, Growth Morphology, Nano Wiskers, Quasicrystal, Tungsten Whiskers

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References

[1] D. Shechtman, I. Blech, D. Gratias, J.W. Cahn, Metallic phase with long-range orientation order and no translationl symmetry, Phys. Rev. Lett. 53 (1984) 1951-(1954).

DOI: 10.1103/physrevlett.53.1951

Google Scholar

[2] C. Janot, Quasicrystals: A Primer, Oxford University Press, London, (1992).

Google Scholar

[3] S.H. Kim, B.H. Kim, S.M. Lee, W.T. Kim, D.H. Kim, On the phase transitions of the quasicrystalline phases in the Al-Cu-Fe-Co alloy, J. Alloy. Compd. 342 (2002) 246-250.

DOI: 10.1016/s0925-8388(02)00185-8

Google Scholar

[4] K. Hiraga, B.P. Zhang, M. Hirabayashi, A. Inoue, T. Masumoto, Highly Ordered Icosahedral Quasicrystal of Al-Cu-Fe Alloy Studied by Electron Diffraction and High-Resolution Electron Microscopy, Jpn. J. Appl. Phys. 27 (1988) L951.

DOI: 10.1143/jjap.27.l951

Google Scholar

[5] M. Surowiec, W. Bogdanowicz, J. Krawczyk, B. Formanek, M. Sozanska, Growth morphology of single-crystal grains obtained by directional crystallization of an Al-Cu-Fe alloy, Phil. Mag. 91 (2011) 2458-2465.

DOI: 10.1080/14786435.2010.528460

Google Scholar

[6] S.M. Lee, B.H. Kim, S.H. Kim, E. Fleury, W.T. Kim, D.H. Kim, Effect of Si addition on the formability of the icosahedral quasicrystalline phase in an Al65Cu20Fe15 alloy, Mater. Sci. Eng. A 294-296 (2000) 93-98.

DOI: 10.1016/s0921-5093(00)01206-5

Google Scholar

[7] W. Gurdziel, J. Krawczyk, W. Bogdanowicz, The microstructure of quasicrystalline Al-Cu-Fe alloys doped with tungsten, Solid State Phenom. 203-204 (2013) 372-375.

DOI: 10.4028/www.scientific.net/ssp.203-204.372

Google Scholar

[8] Binary Systems. Part 1 Elements and binary systems from Ag-Al to Au-Tl, Landolt-Bornstein – Group IV Physical Chemistry Volume 19B1, (2002), 214.

DOI: 10.1007/10655491_55

Google Scholar