Denitrogenation during vacuum induction melting refining Ni base superalloy using CaO crucible

被引：19
|
作者：
Niu, JP [1 ]
Yang, KN
Sun, XF
Jin, T
Guan, HR
Hu, ZQ
机构：
[1] Chinese Acad Sci, Met Res Inst, Beijing 100864, Peoples R China
[2] Shenyang Univ, Dept Mat, Shenyang 110044, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2002年 / 18卷 / 09期
关键词：
D O I：
10.1179/026708302225004784
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The denitrogenation behaviour during vacuum induction melting of Ni base superalloy using CaO crucible was studied, and the nitrogen solubility under different vacuum levels as well as Al and Ti addition amounts at 1873 K were also calculated. The experiment results show that Al addition had beneficial effect, but Ti addition had adverse effect to denitrogenation. The increase of vacuum level is a powerful measure to accelerate the denitrogenation process. The denitrogenation mechanism has been discussed for a nitrogen content of below 10 ppm.
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收藏
页码：1041 / 1044
页数：4
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