Letter | Published:

Crystal Structure of β-Aluminium-Magnesium Alloy

Nature volume 154, page 606 (11 November 1944) | Download Citation

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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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References

  1. 1.

    Z. Metallkunde, 28, 312 (1936).

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Affiliations

  1. Physical Institution, Chalmers University of Technology, Göteborg. Sept. 14.

    • HARALD PERLITZ

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DOI

https://doi.org/10.1038/154606a0

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