Numerical simulation of radiation-induced chemical segregation and phase transformation in a binary system

被引：0
作者：
机构：
[1] Advanced Nuclear Energy Programs, Sandia National Laboratories, Albuquerque, NM
[2] Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI
来源：
| 1600年 / Tech Science Press卷 / 38期
关键词：
Chemical segregation; Monte Carlo; Phase field; Phase transformation;
D O I：
10.3970/cmc.2013.038.091
中图分类号：
学科分类号：
摘要：
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 low-energy 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. Copyright © 2013 Tech Science Press.
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页码：91 / 103
页数：12
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