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Effect of addition of La and Ce on solidification behavior of Al-Cu alloys
  • 作者
    Liu, Tao; Dong, Qing; Fu, Yanan; Yang, Jian; Zhang, Jiao; Sun, Baode
  • 刊物名称
    MATERIALS LETTERS
  • 年、卷、文献号
    2022, 324, 0167-577X
  • 关键词
    Liu, Tao; Dong, Qing; Fu, Yanan; Yang, Jian; Zhang, Jiao; Sun, Baode
  • 摘要
    The effect of La-Ce addition on the solidification behavior of hypoeutectic Al-Cu alloy was investigated using in situ synchrotron X-ray imaging with conventional casting experiments. The results show that La-Ce addition leads to a decrease in nucleation density and coarser grains at a lower cooling rate since La-Ce addition can suppress alpha-Al nucleation to a certain extent. At a higher cooling rate, melt undercooling can be increased by inhibiting early nucleation of alpha-Al on heterogeneous particles with large size, resulting in grain refinement.

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