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An approximation to the description of growth of coherent precipitates

✍ Scribed by Dr. O. Simmich; Prof. Dr. habil. H. Löffler

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
430 KB
Volume
16
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

The tree‐dimensional growth of a spherical coherent particle in an isotropic infinite matrix is considered in the frame of the stationary solution of the classical diffusion equation applying WAGNERS approximation in a varied manner and taking into account both the concentration dependence of the diffusion constant D and the influence of elastic energy.

From the obtained results qualitative conclusions are drawn on the stability of the precipitates during the OSTWALD‐ripening process in dependence on their size. The evaluations doubtlessly confirm the higher stability and the favoured growth of the larger precipitates.

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The growth of γ'-Fe4N iron nitride preci
The growth of γ'-Fe4N iron nitride precipitates in an α-iron matrix
✍ G.R Booker 📂 Article 📅 1961 🏛 Elsevier Science ⚖ 561 KB

y'-Fe,N plates formed in an cc-Fe matrix have been isolated in extraction replicas and examined by electron microscopy and "selected-area" electron diffraction. Individual plates exhibit two sets of fine structure and give a characteristic single-crystal "spot" pattern in which the "spots" are drawn