东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Structural Characterization of Nickel-Base Alloy C-276 Irradiated with Ar Ions

ISSN号：1009-0630
期刊名称：《等离子体科学与技术：英文版》
时间：0
分类：TG139.8[金属学及工艺—合金;一般工业技术—材料科学与工程;金属学及工艺—金属学] TG146.15[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
作者机构：[1]Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China, [2]Nuclear Power Institute of China, Chengdu 610041,China, [3]Suzhou Nuclear Power Research Institute, Suzhou 215004, China
相关基金：supported by the National Basic Research Program of China （No. 2007CB209800）, National Natural Science Foundation of China （Nos. 10775108, 11075119） and the Fundamental Research Funds for the Central Universities （20102020201000013）

作者：靳硕学[1], 郭立平[1], 杨铮[1], 周忠坡[1], 付德君[1], 刘传胜[1], 唐睿[2], 刘飞华[3], 乔岩欣[3]

关键词：离子辐照, 结构表征, 镍基合金, Ar, 掠入射X射线衍射, 原子力显微镜, 透射电子显微镜, TEM观察, irradiation damage, nickel-base alloy, C-276 alloy, super-critical water reactors

中文摘要：

The irradiation damage in nickel-base alloy C-276 irradiated with 115 keV Ar ions from low to very high doses was investigated. Structural characterization was performed using transmission electron microscopy （TEM）, grazing incident X-ray diffraction （GIXRD） and atomic force microscopy （AFM）. High density of interstitial type dislocation loops could be observed at a dose level of around 2.75 displacements per atom （dpa）. With the irradiation dose increased to 27.5 dpa, the average size of loops increased from 5 nm to 16 nm, while the density of the loops decreased from 1.4 × 1011 /cm2 to 4.6 × 10-10 /cm2 . When the irradiation dose reached 82.5 dpa, original grains were transformed into subgrains whose sizes observed from TEM were about 20～60 nm. The fragmentation of grains was confirmed by GIXRD. The mean subgrain size was 40 nm, which was obtained from the full width at half maximum （FWHM） of the X-ray diffraction lines using the Scherrer formula and Williamson formula. AFM micrographs showed that nanometer-sized hillocks formed at the dose of 82.5 dpa, which provided further evidence of grain fragmentation at a high irradiation dose.

英文摘要：

The irradiation damage in nickel-base alloy C-276 irradiated with 115 keV Ar ions from low to very high doses was investigated. Structural characterization was performed using transmission electron microscopy （TEM）, grazing incident X-ray diffraction （GIXRD） and atomic force microscopy （AFM）. High density of interstitial type dislocation loops could be observed at a dose level of around 2.75 displacements per atom （dpa）. With the irradiation dose increased to 27.5 dpa, the average size of loops increased from 5 nm to 16 nm, while the density of the loops decreased from 1.4 × 1011/cm2 to 4.6 × 1010/cm2. When the irradiation dose reached 82.5 dpa, original grains were transformed into subgrains whose sizes observed from TEM were about 20-60 nm. The fragmentation of grains was confirmed by GIXRD. The mean subgrain size was 40 nm, which was obtained from the full width at half maximum （FWHM） of the X-ray diffraction lines using the Scherrer formula and Williamson formula. AFM micrographs showed that nanometer-sized hillocks formed at the dose of 82.5 dpa, which provided further evidence of grain fragmentation at a high irradiation dose.

同期刊论文项目