Mukhopadhyay, NK and Ishihara, KN and Ranganathan, S and Chattopadhyay, K (1991) Rational Approximant Structures and Phason Strain in Icosahedral Quasicrystalline Phases. In: Acta Metallurgica et Materialia, 39 (6). pp. 1151-1159.
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The degeneracy of the reciprocal space with respect to the icosahedral symmetry has been demonstrated by experimental diffraction patterns obtained from rapidly solidified A1-Mn-Si, Mg-A1-Ag, Mg-AI-Zn alloys. The distortion in diffraction patterns has been attributed to rational approximant (RA)structures. The distorted pattern obtained from Mg-A1-Zn system has been indexed based on 3/2 RA structure. The shift parameter has been quantified and shown to vary linearly with the pseudospace counterpart of the corresponding quasicrystalline reciprocal vector, which is the characteristic feature of phason strain.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier.|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||11 Oct 2006|
|Last Modified:||19 Sep 2010 04:31|
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