Complex reaction of the DIGM and discontinuous precipitation and dissolution of phases

The complex reaction of diffusion-induced grain-boundary migration (DIGM), discontinuous precipitation, and dissolution of phases in a precipitation-hardened lead-antimony alloy has been studied. The concentration profile of Sb in front of the migrating boundary has been measured. At the reaction fr...

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Bibliographic Details
Published in:Physics of metals and metallography 2011-12, Vol.112 (6), p.591-595
Main Author: Afanas’ev, N. I.
Format: Article
Language:English
Subjects:
Activation energy
Alloys
Antimony
Boundaries
Chemistry and Materials Science
Comparative analysis
Diffusion
Dissolution
Materials Science
Metallic Materials
Metallography
Migration
Phase Transformations
Phases
Precipitation
Rain and rainfall
Structure
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Summary:The complex reaction of diffusion-induced grain-boundary migration (DIGM), discontinuous precipitation, and dissolution of phases in a precipitation-hardened lead-antimony alloy has been studied. The concentration profile of Sb in front of the migrating boundary has been measured. At the reaction front, there is observed an intense bulk diffusion, which leads to the formation of precipitate-free zones in front of the migrating boundary. Driving forces of the boundary migration have been analyzed. The activation energy of the reaction has been determined. A comparison of the theoretical and experimental values of the rate of the complex reaction of the discontinuous precipitation of phases and DIGM has been carried out.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X11060020