Abstract
Addition of Ru in Ni-base single crystal superalloys had been used to improve the elevated temperature strength and other properties. Significant decreases in stacking fault energy of the γ phase and the volume fraction of γ' phase were observed with the addition of Ru in the superalloys. As well as serving as an effective solid-solution strengthening element in Ni-base single crystal superalloys, Ru-addition was able to effectively strengthen both the γ and γ' phases and suppress the formation of TCP phases. Due to the changes in partitioning behavior of elements and the slight decrease in supersaturation of refractory elements in γ phase with addition of Ru, the creep resistance and microstructural stability of the alloy were improved remarkably. The influence of Ru on microstructure of Ni-base single crystal superalloys was reviewed.
| Original language | English |
|---|---|
| Pages (from-to) | 1-8 |
| Number of pages | 8 |
| Journal | Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment |
| Volume | 32 |
| Issue number | 10 |
| Publication status | Published - 2011 Oct 1 |
| Externally published | Yes |
Keywords
- Microstructure
- Ruthenium(Ru)
- Superalloy
- TCP Phases
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)