Abstract：Zirconium and its alloys are widely used as fuel cladding in nuclear reactors because they have good mechanical properties, good corrosion resistance, and small thermal neutron absorption cross-section. Under irradiation, a large number of irradiation-induced defects are generated, which greatly reduce the mechanical properties and service life of zirconium alloys. In this work, molecular dynamics method is used to study the interaction between stacking fault pyramid (SFP) and point defects (self-interstitial atoms (SIAs), vacancies). At 0 K and 300 K, the SFP absorbs SIAs only; At 600 K, the SFP absorbs both SIAs and vacancies. In addition, the size of SFP has a negligible effect on the interaction mechanism. The binding energy between SIAs/vacancies and SFP is calculated. The binding energy of SIAs is much higher than that of vacancies, and SIAs are absorbed easily. Current work provides new insight into understanding the growth mechanism of irradiation-induced defects in zirconium.
收稿日期: 2023-05-25
出版日期: 2024-06-04
基金资助:国家自然科学基金;重点实验室基金
通讯作者:
范海冬
E-mail: haidongfan8@foxmail.com
引用本文:
谢荣轩 刘燕 许传龙 田晓宝 蒋文涛 王清远 范海冬. 锆中层错金字塔与点缺陷的相互作用研究[J]. , 2024, 45(3): 289-301.
Hai DongFan. Study on the Interaction between Stacking Fault Pyramid and Point Defects in Zirconium. , 2024, 45(3): 289-301.
2024, Vol. 45 
