Molecular dynamics study of the irradiation damage accumulation in beryllium oxide at different temperatures

被引：1
|
作者：
Hou, Ming-dong [1 ]
Zhou, Xiang -wen [1 ]
Yan, Zefan [1 ]
Liu, Malin [1 ]
Liu, Bing [1 ]
机构：
[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
来源：
MATERIALIA | 2023年 / 30卷
关键词：
Beryllium oxide; Molecular dynamics simulation; Irradiation damage; Compressive strength; PRIMARY RADIATION-DAMAGE; DISPLACEMENT; REACTOR; CASCADES; ENERGY; LOOPS;
D O I：
10.1016/j.mtla.2023.101830
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Beryllium oxide as a nuclear material has received renewed attention in recent years, and it is critical to investigate the irradiation behavior. The irradiation damage accumulation in beryllium oxide is investigated by molecular dynamics method. The evolution of defects and the degree of amorphization have been revealed as a function of dose at different irradiation temperatures. The dislocation induced by irradiation is obvious only when the irradiation temperature is above 873 K. A new cubic diamond structure appears at higher irradiation temperatures. Simulated XRD results are closely related to the degree of amorphization. In addition, the influence of irradiation damage on the compressive strength of beryllium oxide under different irradiation conditions is also studied.
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页数：13
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