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ON THE THEORY OF HOMOGENEOUS NUCLEATION OF INCOHERENT INCLUSIONS IN SOLID SOLUTIONS
- Authors: Veshchunov M.S.1
-
Affiliations:
- Nuclear Safety Institute (IBRAE), Russian Academy of Sciences
- Issue: Vol 165, No 2 (2024)
- Pages: 214-225
- Section: Articles
- URL: https://journals.rcsi.science/0044-4510/article/view/256481
- DOI: https://doi.org/10.31857/S004445102402007X
- ID: 256481
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Abstract
Based on a critical analysis of the traditional theory of homogeneous nucleation of incoherent precipitates of a new phase in solid solutions, it is shown that the elastic energy associated with a difference in the atomic volumes of two phases does not contribute to the nucleation barrier due to the absorption of thermal point defects at the particle-matrix interface (in contrast to the traditional approach). Correspondingly, a new kinetic model is developed for the rate of nucleation of incoherent precipitates in a supersaturated solid solution of alloying atoms, which has also been generalized to take into account excess vacancies formed under non-equilibrium conditions of quenching tests.
About the authors
M. S. Veshchunov
Nuclear Safety Institute (IBRAE), Russian Academy of Sciences
Author for correspondence.
Email: msvesh@gmail.com
Russian Federation, 115191, Moscow
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