Abstract
A PIECE of β-aluminium-magnesium alloy of irregular shape, when examined by the Laue method, showed all the characteristics of the Laue symmetry m3m = 0h, which proves conclusively that β Al-Mg is cubic and not hexagonal as assumed by K. Riederer1. By means of rotation photograms the length of the edge of the unit cube was determined to be a = 28·13 A. and the period of identity along a face diagonal d = 19·93 A., showing that the space-lattice is face-centred. Weissenberg patterns around [100] and [110] showed that the characteristic space-group of β Al-Mg is Fd3m = 0h7.
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Z. Metallkunde, 28, 312 (1936).
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PERLITZ, H. Crystal Structure of β-Aluminium-Magnesium Alloy. Nature 154, 606 (1944). https://doi.org/10.1038/154606a0
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DOI: https://doi.org/10.1038/154606a0
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