摘要
金属材料在辐照过程中会发生嬗变反应,从而在材料内部形成氦泡,进而影响金属材料的宏观力学行为.因此,开展氦影响下金属材料力学性能的研究对抗辐照材料的设计及工程应用具有重要意义.氦对材料力学行为的影响是一个典型的多尺度问题,故论文从从原子尺度到宏观尺度针对含氦金属材料力学行为的研究方面进行了总结,主要包括氦原子的产生、氦团簇/氦泡的形成、氦泡在材料中的微观行为以及氦对材料宏观力学性能的影响.在此基础上,展望了该领域中存在的主要科学问题.
Investigations on the mechanical behaviors of irradiated metallic materials with helium effect are of great significance for the design and engineering application of anti-irradiation materials.During the high-energy neutron irradiation process,helium(He)bubbles can be produced in metallic materials through nuclear transmutation reactions.The plastic deformation behavior of irradiated materials can be significantly affected by the presence of helium bubbles.Hence,we summarized the research on the mechanical behaviors of metallic materials with helium effect from the atomic scale to the macro scale,including the generation of helium atoms,the formation of helium clusters/helium bubbles,the microscopic behavior of helium bubbles in materials,and the influence of helium on the macroscopic mechanical properties of materials.Finally,some scientific problems for future studies are also presented.
作者
余龙
陈李嵘
隋昊男
刘文斌
刘莹
段慧玲
Long Yu;Lirong Chen;Haonan Sui;Wenbin Liu;Ying Liu;Huiling Duan(Department of Mechanics and Engineering Science,College of Engineering,Peking University,Beijing,100871)
出处
《固体力学学报》
CAS
CSCD
北大核心
2020年第6期485-497,共13页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金项目(11632001,11988102,12002005)资助.
关键词
氦泡
金属材料
微观变形机理
力学性能
辐照氦脆
helium bubbles
metallic materials
microscopic deformation mechanism
mechanical property
irradiation helium embrittlement
