1. Precipitation of β-NiAl phase in a high Ru-containing Ni-based single crystal superalloy.
- Author
-
Zhou, Yu, Zhao, Xinbao, Fan, Yunpeng, Yue, Quanzhao, Xia, Wanshun, Pan, Qinghai, Cheng, Yuan, Gu, Yuefeng, and Zhang, Ze
- Subjects
- *
SINGLE crystals , *HEAT resistant alloys , *EUTECTICS , *NICKEL (Coin) , *SOLIDIFICATION , *NUCLEATION - Abstract
• β-NiAl phase precipitates in a novel high Ru-containing Ni-SC. • Ru element is found to be obviously biased in β-NiAl phase. • The partition of Ru assists nucleation of β-NiAl phase during solidification. • Studies based on the solidification path of experimental alloy were carried out. The precipitation of β-NiAl phase in a high Ru-containing Ni-based single crystal superalloys was investigated. The β-NiAl phase is mainly distributed in the interdendritic region of the as-cast structure. And it was found parts of Ru elements were polarized in β-NiAl phase as the existence of strong bonds between Ru atoms and Al atoms. In addition, the solidification path of the experimental alloy passes through the region of the L → L 1 + γ → L 2 + γ + β-NiAl → L 3 + γ + β-NiAl + precipitated γ′ → γ + β-NiAl + precipitated γ′ + γ/γ′ eutectics. It provides experimental data and theoretical guidance for the composition design of the novel Ru-containing high-generation Ni-SCs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF