Effect of Ru on Microstructure of a Single Crystal Nickel-Base Superalloy
The effect of Ru on the microstructure of a high content refractory elements nickel base Superalloy has been studied in the present investigation. The results showed that, the adding of 3%Ru did not prevent the precipitation of TCP phase during high temperature exposure, and even accelerated the formation of TCP phase,however the addition of Ru decreased the growth rate of μ phase significantly. In addition, the adding of Ru decreased the solving temperature of γ/γ′ eutectic by 5°C, and increased the tendency of γ′ rafting during high temperature exposure.
Yafang Han et al.
W. Y. Ma et al., "Effect of Ru on Microstructure of a Single Crystal Nickel-Base Superalloy", Materials Science Forum, Vols. 546-549, pp. 1195-1200, 2007