Formation of the Surface Eutectic of a Ni-based Single Crystal Superalloy
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2017年第4期
论文作者：Liang Cao Yizhou Zhou Tao Jin Xiaofeng Sun
文章页码：347 - 351
摘 要：The microstructure, size, elemental composition and hardness of the surface eutectic layer formed during directional solidi?cation of a Ni-based single crystal superalloy were studied. The formation mechanisms of the surface eutectic on the outer surface of the casting were also discussed. The metal/mould interactions did not play any role in the formation of the surface eutectic. The formation cause of surface eutectic layer was attributed to the interdendritic residual liquid for excretion caused by solidi?cation shrinkage.
Liang Cao1，Yizhou Zhou1，Tao Jin1，Xiaofeng Sun1
1. Institute of Metal Research, Chinese Academy of Sciences
摘 要：The microstructure, size, elemental composition and hardness of the surface eutectic layer formed during directional solidi?cation of a Ni-based single crystal superalloy were studied. The formation mechanisms of the surface eutectic on the outer surface of the casting were also discussed. The metal/mould interactions did not play any role in the formation of the surface eutectic. The formation cause of surface eutectic layer was attributed to the interdendritic residual liquid for excretion caused by solidi?cation shrinkage.
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