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- Title
Crystallographic analysis of extra reflections in the electron diffraction patterns of the CuAu alloy ordered at T < 350°C.
- Authors
Kabanova, I.
- Abstract
The electron-microscopic examination of the CuAu alloy subjected to rapid quenching from temperatures below T revealed in its structure the presence of a phase, whose structure is close (in terms of the lattice parameters) to the L1 structure, but is characterized by the presence of uncommon extra reflections in the electron diffraction patterns at distances 1/3〈201〉*, 1/5〈203〉*, 1/7〈304〉*, etc., in the coordinates of the L1 structure, and by the simultaneous presence of superlattice reflections of two types in their electron diffraction patterns. A crystallographic analysis showed that the extra reflections observed cannot correspond to the points of the reciprocal lattice of the long-period Z phase [4] or any other phase. The arrangement of these reflections is explained well by the punctures of the plane of diffraction by a set of [ $$ \bar 1 $$01]* parallel streaks passing through fundamental and superlattice reflections. These streaks are parallel to the (101) plane and to the plates of the phase revealed.
- Publication
Physics of Metals & Metallography, 2010, Vol 110, Issue 1, p24
- ISSN
0031-918X
- Publication type
Article
- DOI
10.1134/S0031918X10070045