Effects of deuterium implantation and subsequent electron irradiation on the microstructure of Fe–10Cr model alloy
Effects of deuterium implantation and subsequent electron irradiation on the microstructure of Fe–10Cr model alloy
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DOI：
10.1016/j.jnucmat.2012.01.017
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发表时间：
2012-04
影响因子：
3.1
通讯作者：
Pingping Liu;J. Bai;D. Ke;F. Wan;Y. B. Wang;Yongming Wang;S. Ohnuki;Q. Zhan
中科院分区：
文献类型：
--
作者：
Pingping Liu;J. Bai;D. Ke;F. Wan;Y. B. Wang;Yongming Wang;S. Ohnuki;Q. Zhan
由于氘在核反应中广泛存在，氘原子与材料辐照缺陷之间的相互作用对核聚变反应堆中材料的设计具有重要意义，并且这种相互作用为基于同位素效应研究材料中氢同位素的动态行为提供了一种手段。本文采用超高压透射电镜（TEM）研究了氘注入和随后的电子辐照对Fe-10wt %Cr模型合金显微组织的影响。原位观察表明，位错环的尺寸随电子辐照剂量和辐照温度的增加而增大。辐照温度高达823K时，未观察到明显的空洞。根据位错环在623 ~ 773k处的生长速度计算了氘-空位配合物的迁移能（Em）。还获得了氘离子注入引起的位错环的高分辨率透射电镜图像。
The interactions between deuterium atoms and irradiation defects in materials are important for designing materials in fusion reactors due to the fact that deuterium widely exists in nuclear reactions, and that the interactions provide a means to study the dynamic behavior of the isotopes of hydrogen in the material based on the isotope effects. In the current paper, the effects of deuterium implantation and the subsequent electron irradiation on the microstructure of Fe–10wt%Cr model alloy have been investigated using ultra-high voltage transmission electron microscopy (TEM). The in situ observation showed that the size of dislocation loops increases with increasing electron irradiation dose and irradiation temperature. No distinct voids were observed at irradiation temperature up to 823K. The migration energy (Em) of deuterium–vacancy complex was calculated from the growth speed of dislocation loops at 623–773K. A high-resolution TEM image of dislocation loops because of deuterium ion implantation was also achieved.