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Original Articles

45° twins with apparent eightfold symmetry in Cr5Ni3Si2 alloy

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Pages 347-363 | Received 28 Apr 1988, Accepted 11 Jan 1989, Published online: 20 Aug 2006
 

Abstract

45° twins and microtwin domain structure in electron diffraction patterns displaying pseudo-eightfold rotational symmetry were studied in a rapidly solidified Cr5Ni3Si2 alloy by means of transmission electron microscopy. The high-resolution images usually consist of overlapped 45° twins of the β-Mn structure and appear quite different from that of the octagonal quasicrystal. A twin model is suggested.

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