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Influence of Fission Product Distribution in Medium-Burnup UO2 Fuel on Cracking Behavior

Dongsheng Xie1,2, Chuanbao Tang2, Tong Fu1,2

  • 1The First Sub-Institute, Nuclear Power Institute of China, Chengdu 610213, China.

Materials (Basel, Switzerland)
|August 14, 2025
PubMed
Summary

Solid fission product accumulation at grain boundaries causes embrittlement in medium-burnup UO2 fuel. This study reveals how fission product distribution impacts fuel cracking behavior and nuclear fuel safety.

Keywords:
bubblesfission productsgrain boundary crackingintragranular cracksnuclear fuel

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