Refinement of γ′ precipitate with melt undercooling in nickel-based superalloy

被引：4
|
作者：
Liu, F [1 ]
Yang, GC [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源：
MATERIALS TRANSACTIONS | 2001年 / 42卷 / 06期
关键词：
nickel-based superalloy; gamma ' precipitation; melt undercooling; scanning electron microscopy; transmission electron microscopy;
D O I：
10.2320/matertrans.42.1135
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of melt undercooling on the gamma ' precipitation is investigated in nickel-based superalloy by employing the method of molten salt denucleating combined with thermal cycles. The application of SEM and TEM technique allows to further confirm and interpret gamma ' formation mechanism here. In connection with the classical nucleation theory, it is found that not only the size of precipitated gamma ' but its distribution in the as-solidified structure is also drastically influenced by the melt undercooling.
引用
收藏
页码：1135 / 1138
页数：4
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