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题名: Effects of Re on surface eutectic formation for Ni-base single crystal superalloys during directional solidification
作者: Cao, Liang;  Zhou, Yizhou;  Jin, Tao;  Sun, Xiaofeng
发表日期: 2017-11-1
摘要: Effects of Re on the formation of surface eutectics have been investigated by using Ni-base single crystal superalloys with different Re additions. It was found that Re promotes the segregation of Al and Ta to the eutectic melt, leading to an increase of the surface and internal eutectics. In addition, the addition of Re also increased the freezing range, the local solidification time, and the permeability of the dendritic network within the mushy zone. These factors ultimately promoted the outflow of the interdendritic residual liquid with the action of solidification shrinkage, and led to the formation of more surface eutectics. In contrast, the addition of Re had no obvious influence on the surface eutectic microstructures. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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Recommended Citation:
Cao, Liang,Zhou, Yizhou,Jin, Tao,et al. Effects Of Re On Surface Eutectic Formation For Ni-base Single Crystal Superalloys During Directional Solidification[J]. Journal Mater Sci Technol,2017,33(11):1308-1313.

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