Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam
Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam
复制标题
慢正电子束研究氦辐照 FeCrNi 合金中的空位型缺陷
DOI：
10.1016/j.jnucmat.2014.12.070
复制
发表时间：
2015-03
影响因子：
3.1
通讯作者：
Baoyi Wang
中科院分区：
文献类型：
--
作者：
Jing Yang;Yaru Wu;Liping Guo;Baoyi Wang
用正电子湮没谱研究了Fe16.7Cr14.5Ni模型合金和316不锈钢在140keV He离子辐照下的组织演变。注量分别为1×10~(16)He和5×10~(16)He离子/cm~2。辐照温度分别为室温和573K。S参数-入射正电子能谱的变化表明，He离子辐照后形成了大量的空位型缺陷。同时，氦原子沉积在块体中，并形成一定数量的氦空位复合体。径迹区的主要缺陷可能是空位型缺陷，而级联区的主要缺陷可能是He-空位复合体。高温辐照可使空位型缺陷迁移聚集，形成空位团，甚至形成微空洞。在不同的辐照温度下，氦原子的扩散机制可能发生变化。
The evolution of microstruture for Fe16.7Cr14.5Ni model alloy and 316 stainless steel irradiated with 140 keV He ions were studied by Positron annihilation spectroscopy. The fluences were 1 × 1016and 5 × 1016He ions/cm2. The irradiation temperature was room temperature and 573 K, respectively. The variation ofSparameter-incident positron energy profile indicated that large amount of vacancy-type defects formed after He ion irradiation. Meanwhile, helium atoms deposited in bulk and certain amount of He-vacancy complexes were formed. The vacancy-type defects could be the major defects in track region and He-vacancy complexes would be the main defects in cascade region. The vacancy-type defects could migrate and aggregate to form vacancy clusters and even microvoids at elevated temperature irradiation. The diffusion mechanism of helium atoms might be changed at different irradiation temperature.
登录
查看更多内容
影响因子：
3.1
作者：
I. Ioka;Y. Ishijima;K. Usami;Naotoshi Sakuraba;Y. Kato;K. Kiuchi
通讯作者：
I. Ioka;Y. Ishijima;K. Usami;Naotoshi Sakuraba;Y. Kato;K. Kiuchi
DOI：
10.1088/0305-4608/11/4/009
发表时间：
1981-04
期刊：
Journal of Physics F: Metal Physics
影响因子：
--
作者：
C. Dimitrov;M. Tenti;O. Dimitrov
通讯作者：
C. Dimitrov;M. Tenti;O. Dimitrov
DOI：
10.1103/physrevb.22.2226
发表时间：
1980-09
期刊：
Bulletin of the American Physical Society
影响因子：
--
作者：
R. Nieminen;J. Oliva
通讯作者：
R. Nieminen;J. Oliva
影响因子：
1.2
作者：
Ishizaki, T;Xu, Q;Nagata, S
通讯作者：
Nagata, S
影响因子：
3.1
作者：
Trinkaus, H;Singh, BN
通讯作者：
Singh, BN