Thangaraj, N and Subbanna, GN and Ranganathan, S and Chattopadhyay, K (1987) Electron microscopy and diffraction of icosahedral and decagonal quasicrystals in aluminum-manganese alloys. In: Journal of Microscopy, 146 (3). pp. 287-302.Full text not available from this repository. (Request a copy)
Electron microscopy observations on the morphol. of icosahedral and decagonal quasicrystals in Al-Mn alloys were interpreted in favor of a heterogenous nucleation mode. The transition of icosahedral quasicrystals from nonfacetted dendrites to facetted particles occurs as a function of compn. While the variety of electron diffraction patterns expected from icosahedral quasicrystals was demonstrated for a no. of alloys, subtle intensity differences exist among analogous patterns from Al-Mn, Al-Cr, Al-Mn-Si, and Mg-Al-Zn-Cu alloys. Electron diffraction patterns from decagonal quasicrystals are understood on the basis of an edge-centered icosahedral as opposed to a vertex-centered icosahedron for icosahedral quasicrystals. Truncation from 2-dimensional quasicrystals is discussed.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to John Wiley & Sons.|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||01 Jul 2008|
|Last Modified:||27 Aug 2008 13:29|
Actions (login required)