NIMTE OpenIR  > 2018专题
Abnormal grain growth of UO2 with pores in the final stage of sintering: A phase field study
Guo, Yaolin; Liu, Zhen; Huang, Qing; Lin, Cheng-Te; Du, Shiyu
2018
发表期刊COMPUTATIONAL MATERIALS SCIENCE
卷号145页码:24-34
摘要The phase field formulation has been employed to investigate the abnormal grain growth behaviors for UO2 with pores in the final stage of sintering. The microstructure evolution is found dependent on the total volume fraction and individual sizes of pores. The grain growth rate is evidently suppressed when the porosity is high and it is found independent of pore size at low porosity. Moreover, the smaller pores may cause worse abnormal grain growth at low porosities and more significant stagnation effect at high porosities in the sintering of UO2. By further inspection on pore-boundary interaction in a bi-grain system designed in this work, the grain growth behavior is determined to be strongly correlated to the engulfment of pores by grains which may be described by the critical grain radius and critical time defined hereby. The data obtained may provide a new insight into the mechanism behind the sintering technology of nuclear fuels such as UO2. (C) 2018 Elsevier B.V. All rights reserved.
关键词Uranium-dioxide Kinetics Simulation Energy Model Size Systems
学科领域Materials Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16737
专题2018专题
推荐引用方式
GB/T 7714
Guo, Yaolin,Liu, Zhen,Huang, Qing,et al. Abnormal grain growth of UO2 with pores in the final stage of sintering: A phase field study[J]. COMPUTATIONAL MATERIALS SCIENCE,2018,145:24-34.
APA Guo, Yaolin,Liu, Zhen,Huang, Qing,Lin, Cheng-Te,&Du, Shiyu.(2018).Abnormal grain growth of UO2 with pores in the final stage of sintering: A phase field study.COMPUTATIONAL MATERIALS SCIENCE,145,24-34.
MLA Guo, Yaolin,et al."Abnormal grain growth of UO2 with pores in the final stage of sintering: A phase field study".COMPUTATIONAL MATERIALS SCIENCE 145(2018):24-34.
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