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A comparative electron microscopic study of Al-based and Mg-based quasicrystals

Published online by Cambridge University Press:  31 January 2011

N. K. Mukhopadhyay,
N. Thangaraj,
K. Chattopadhyay and
S. Ranganathan
N. K. Mukhopadhyay
Affiliation:
Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
N. Thangaraj
Affiliation:
Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
K. Chattopadhyay
Affiliation:
Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
S. Ranganathan
Affiliation:
Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India
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Abstract

It is shown that both icosahedral Al–Mn–Si and Mg–Al–Zn alloys give rise to the same variety of electron diffraction patterns as documented for icosahedral Al–Mn alloys. Subtle variations in intensity are ascribed to a different decorational motif in terms of the Mackay icosahedron and the Pauling triacontahedron. Icosahedral Al–Mn–Si alloys do not appear to be ordered on a superlattice basis.

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Type
Articles
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Journal of Materials Research , Volume 2 , Issue 3 , June 1987, pp. 299 - 304
Copyright
Copyright © Materials Research Society 1987

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References

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