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
Source PublicationCOMPUTATIONAL MATERIALS SCIENCE
Volume145Pages:24-34
AbstractThe 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.
KeywordUranium-dioxide Kinetics Simulation Energy Model Size Systems
Subject AreaMaterials Science
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16737
Collection2018专题
Recommended Citation
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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