Molecular dynamic calculation of solidification kinetic coefficient of metallic γ metallic uranium

作者：Hu, Guichao; Wu, Lingkang; Ren, Zhiyong; Shi, Jie; Li, Yufei; Ben Xu^*; Luo, Chao^*

来源：Journal of Nuclear Materials, 2022, 559: 153369.

DOI：10.1016/j.jnucmat.2021.153369

• Metallic uranium
• Molecular dynamic
• Free solidification simulation
• Fluctuation simulation
• Solidification kinetic coefficients

In this study, free solidification simulation (FSS) and interface fluctuation simulation (FS), which were both based on molecular dynamic (MD) methods, were employed to calculate the solidification kinetic coefficients of gamma metallic uranium. The calculation results of FSS were mu(100 )= 31.94 cm/s/K, mu(110) = 35.61 cm/s/K, and mu(111) = 28.42 cm/s/K; while the results of FS were mu 100 = 39.99 cm/s/K, mu(110) = 33.78 cm/s/K, and mu(111) = 36.80 cm/s/K, indicating that FSS and FS have similar performance.

• 单位
  清华大学