DAPO effect in Fe sub(23)B sub(6)

• Published in: Physics of metals and metallography Vol. 113; no. 1; pp. 48 - 61
• Main Authors: Barinov, V A, Tsurin, V A, Surikov, V T
• Format: Journal Article
• Language: English
• Published: 01-01-2012
• Subjects: Annealing; Approximation; Displacement; Localization; Mathematical analysis; Precipitation; Transformations; Unit cell
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X12010024

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 alpha -Fe in Fe sub(23)B sub(6) without a change in the temperature of the magnetic transformation T sub(C) of the phase in the process of compacting of powders and subsequent annealing of the compacts at T greater than or equal to 325 K, respectively. It is shown that the nature of the observed effect is determined by the localization of Fe(4a) atoms in the crystallographic positions Fe(4b) of the fcc unit cell of the metastable Fe sub(23)B sub(6) phase (diverse atomic position occupancy (DAPO)).