| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1606670 | Journal of Alloys and Compounds | 2016 | 5 Pages |
Abstract
The interdendritic Mo homogenization and relevant sub-solidus melting are investigated in detail during solution treatment for Mo-strengthening single crystal superalloys. During solidification, NiMo-γ eutectics and Ni2Mo phases precipitate from the residual liquid and the Mo super-saturated interdendritic γ channel, respectively. Due to such super-saturation of Mo, Mo diffuses to interdendritic Mo-rich eutectic in first 5 min of solution treatment, and hence the eutectic sharply propagates, opposite to homogenization of Mo. The excess propagated eutectic causes the occurrence of sub-solidus melting. The proposed Mo-homogenization treatment can completely eliminate such sub-solidus melting.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yi Ru, Shusuo Li, Yanling Pei, Jian Zhou, Shengkai Gong, Huibin Xu,