DAPO effect in Fe23B6

The potential of the extended local atomic displacement approximation (ELADA) is investigated in application to the description of the mechanism of the effect of the diverse atomic position occupancy (DAPO effect), which manifests itself in the “absorption and precipitation” of α-Fe in Fe 23 B 6 wit...

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Bibliographic Details
Published in:Physics of metals and metallography 2012, Vol.113 (1), p.48-61
Main Authors: Barinov, V. A., Tsurin, V. A., Surikov, V. T.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Diffusion
Materials Science
Metallic Materials
Phase Transformations
Structure
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Summary:The potential of the extended local atomic displacement approximation (ELADA) is investigated in application to the description of the mechanism of the effect of the diverse atomic position occupancy (DAPO effect), which manifests itself in the “absorption and precipitation” of α-Fe in Fe 23 B 6 without a change in the temperature of the magnetic transformation T C of the phase in the process of compacting of powders and subsequent annealing of the compacts at T ≥ 325 K, respectively. It is shown that the nature of the observed effect is determined by the localization of Fe(4 a ) atoms in the crystallographic positions Fe(4 b ) of the fcc unit cell of the metastable Fe 23 B 6 phase (diverse atomic position occupancy (DAPO)).
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X12010024