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Numerical Simulation of Radiation-Induced Chemical Segregation and Phase Transformation in a Binary System

Efraín Hernández-Rivera1,2, Veena Tikare1, Lumin Wang2

Advanced Nuclear Energy Programs, Sandia National Laboratories, Albuquerque, NM, USA.
Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI, USA.

Computers, Materials & Continua 2013, 38(2), 91-103.


We present the development of a hybrid Monte Carlo-phase field model that is able to simulate radiation induced chemical segregation and the corresponding phase transformation and nano-structure evolution. Under irradiation by a lowenergy ion beam, defects (vacancies) are created and accumulate. In a binary crystalline material, AB, studied in this work, these defects are of the two types A and B and diffuse at different rates. These differential diffusivities are sufficient driving mechanisms for the formation of chemically distinct regions with accompany changes in phases and nano-structure. In this work, we present a model that can simulate these changes by treating the differential diffusion of the vacancies of the two components.


Cite This Article

E. . Hernández-Rivera, V. . Tikare and L. . Wang, "Numerical simulation of radiation-induced chemical segregation and phase transformation in a binary system," Computers, Materials & Continua, vol. 38, no.2, pp. 91–103, 2013.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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