Size Effects in Formation of Segregation and Grain-Boundary Decomposition in Nanocrystalline Alloys
- Authors: Razumov I.K.1
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Affiliations:
- Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Issue: Vol 92, No 7 (2018)
- Pages: 1338-1344
- Section: Physical Chemistry of Nanoclusters and Nanomaterials
- URL: https://journals.rcsi.science/0036-0244/article/view/170057
- DOI: https://doi.org/10.1134/S0036024418070233
- ID: 170057
Cite item
Abstract
The effect of finite grain size on the formation of grain boundary segregations, and on the morphology of precipitates during decomposition, is studied. It is shown that in dilute solid solutions there are critical grain sizes at which decomposition is suppressed, both at the grain boundaries and in the bulk. A generalized phase-equilibrium diagram is constructed that considers the size factor, and a classification of the morphologies of precipitates during grain-boundary decomposition is suggested.
About the authors
I. K. Razumov
Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Author for correspondence.
Email: rik@imp.uran.ru
Russian Federation, Yekaterinburg, 620041