期刊
ACTA MECHANICA SOLIDA SINICA
卷 32, 期 6, 页码 675-687出版社
SPRINGER
DOI: 10.1007/s10338-019-00145-z
关键词
Crystal plasticity; Irradiation effect; Uniaxial tension; Dislocation; FCC crystal
资金
- National Natural Science Foundation of China (NSFC) [11202114]
- Beijing Higher Education Young Elite Teacher Project [YETP0156]
- Tsinghua University Initiative Scientific Research Program [2019Z08QCX06]
In this paper, a crystal plasticity model considering the irradiation effect based on the thermal activation theory is established. The evolutions of screw dislocations, edge dislocations, and stacking fault tetrahedrals (SFTs) (induced by irradiation) are included into the model. The interactions between dislocations and irradiation-induced SFTs are also considered. The 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 copper. The 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 copper. Especially for polycrystalline copper, the simulation results are in good agreement with the experimental data.
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