Dislocation loop and tangle evolution of peak damage region in tungsten irradiated by heavy ion and deuterium plasma

被引：22

作者：

Guo, Wangguo ^{[1
,2
]}

Wang, Shiwei ^{[1
,2
]}

Ge, Lin ^{[3
]}

Fu, Engang ^{[4
]}

Yuan, Yue ^{[1
,2
]}

Cheng, Long ^{[1
,2
]}

Lu, Guang-Hong ^{[1
,2
]}

机构：

[1] Beihang Univ, Sch Phys, Beijing 100191, Peoples R China

[2] Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Beijing 100191, Peoples R China

[3] Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China

[4] Peking Univ, State Key Lab Nucl Phys & Technol, Sch Phys, Beijing 100871, Peoples R China

来源：

NUCLEAR FUSION | 2020年 / 60卷 / 03期

基金：

中国博士后科学基金;

关键词：

heavy ion irradiation; deuterium exposure; dislocation loop; dislocation tangle; bubble; RADIATION-DAMAGE; IN-SITU; MICROSTRUCTURE; TEMPERATURE; BEHAVIOR; ALLOYS; BEAMS; TEM;

D O I：

10.1088/1741-4326/ab6b3f

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Transmission electron microscope is widely used to investigate the defects induced by heavy ion irradiation and deuterium plasma exposure in tungsten, however, results differ greatly between in situ and near-bulk irradiation experiments. Here we adopt the back-thinned electropolishing and re-electropolishing method to study the microstructure in the peak damage region of heavy ion damaged tungsten. Transition from dislocation loops to complex dislocation tangles with increasing damage level is observed, and dislocation tangle decomposition and deuterium bubble formation under high-flux deuterium plasma exposure are also revealed. The results presented in this paper provide useful information for further investigation on irradiation defect evolution and the synergetic effect of displacement damage and deuterium behavior in W.

引用

页数：8

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