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首页> 外文期刊>Journal of Materials Science >A new model for radiation-induced grain boundary segregation with grain boundary movement in concentrated alloy system
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A new model for radiation-induced grain boundary segregation with grain boundary movement in concentrated alloy system

机译：集中合金体系中晶界运动引起的辐射诱导晶界偏析的新模型

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摘要

We have developed a new model for radiation-induced grain boundary migration (RIGM) and radiation-induced segregation (RIS) for austenitic iron-chromium-nickel alloy system. It was assumed that the RIS was induced by diffusional and annihilation processes of excess point defects at the grain boundary, and the RIGM occurred due to rearrangement process of atoms on one of the interfacial planes by annihilation of point defects. The calculated results indicated that the region of RIS was enlarged by the RIGM and asymmetrical concentration profiles were observed around the migrated grain boundary. The present model could explain the RIS behavior with or without grain boundary migration as comparing with our previous experimental results. (C) 2005 Springer Science + Business Media, Inc.
机译：我们已经开发了一种新的模型，用于奥氏体铁铬镍合金系统的辐射诱发的晶界迁移（RIGM）和辐射诱发的偏析（RIS）。假定RIS是由晶界处多余点缺陷的扩散和an灭过程引起的，而RIGM则是由于点缺陷被ni灭而在界面之一上的原子重排过程所致。计算结果表明，RIGM使RIS区域扩大，在迁移的晶界周围观察到不对称的浓度分布。与我们以前的实验结果相比，该模型可以解释有或没有晶界迁移的RIS行为。 （C）2005年Springer Science + Business Media，Inc.

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