A Crystal Plasticity Model with Irradiation Effect for the Mechanical Behavior of FCC Metals

作     者：Jnnfeng Nie Yunpeng Liu Pandong Lin Qihao Xie Zhanli Liu 

作者机构：Institute of Nuclear and New Energy TechnologyCollaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Minis try of EducationTsinghua UniversityBeijing 100084China Applied Mechanics Lab.School of Aerospace EngineeringTsinghua UniversityBeijing 100084China Data Science and Information Technology Research CenterTsinghua-Berkeley Shenzhen InstituteShenzhen 518055China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2019年第32卷第6期

页      面：675-687页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：The support of the National Natural Science Foundation of China(NSFC)under Grant No.11202114 Beijing Higher Education Young Elite Teacher Project under Grant No.YETP0156 Tsinghua University Initiative Scientific Research Program under Grant No.2019Z08QCX06 are gratefully acknowledged 

主　　题：Crystal plasticity Irradiation effect Uniaxial tension Dislocation FCC crystal 

摘      要：In this paper,a crystal plasticity model considering the irradiation effect based on the thermal activation theory is *** evolutions of screw dislocations,edge dislocations,and stacking fault tetrahedrals(SFTs)(induced by irradiation)are included into the *** interactions between dislocations and irradiation-induced SFTs are also *** constitutive model is numerically implemented on the ABAQUS platform through UMAT subroutine and applied to study the irradiation effect on the mechanical behavior of pure *** mechanical properties of single and polycrystalline copper are studied,and the simulation results show that the constitutive model can properly predict the mechanical behavior of irradiated pure *** for polycrystalline copper,the simulation results are in good agreement with the experimental data.