Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 656, Issue -, Pages 159-165Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.09.201
Keywords
MgAIZn; Intermetallics; Crystal structure; X-ray diffraction; Quasicrystal approximant; Computer simulations; Disordered systems
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Intermetallic Mg alloys are of interest in the development of light materials with specific properties and some of them are crystalline approximants of quasicrystalline materials. Mg32Al12Zn37 single crystal structure, cubic, Im (3) over bar, a = 14.1845(1) angstrom, is disordered and belongs to the well known 1/1 approximant structural type commonly called Mg-32(Al1-xZnx)(49) or T-phase. In this family, Mg32Al12Zn37 is a new member remarkable for its very special composition nearby intersection of the 2/1 and 1/1 lines that mark composition domains of cubic 2/1 and 1/1 approximants. Structural features are discussed comparatively with literature data to emphasize the great adaptability through atom disorder of the 1/1 structure. (C) 2015 Elsevier B.V. All rights reserved.
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