本研究进行了单相多晶U3Si2蠕变性能研究,发展了多场耦合模型与算法,建立了多晶有限元模型,开展了多尺度蠕变研究。将计算模拟结果和实验结果进行对比,验证了模型与算法的有效性,并基于计算模拟结果得到了基于机制的多晶U3Si2宏观蠕变率模型。
The creep behavior of single-phase polycrystalline U3Si2 has been studied, the multi-field coupling model and algorithm have been developed, the polycrystalline finite element model has been established, and the multi-scale creep has been studied. The simulation results are compared with the experimental results to verify the validity of the model and the algorithm. Based on the simulation results, a mechanism-based macro-creep rate model of polycrystalline U3Si2 is obtained.