Effect of Ru on Microstructure of a Single Crystal Nickel-Base Superalloy

Abstract:

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.

• Periodical: Materials Science Forum (Volumes 546-549)
• Pages: 1195-1200
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.546-549.1195
• Online since: May 2007
• Authors: Wen You Ma, Ya Fang Han, Shu Suo Li, Yun Rong Zheng, Sheng Kai Gong
• Keywords: Microstructure, Ru, Single Crystal Superalloy, TCP Phase

References

[1] G.E. Fuchs. Mater Sci and Eng A, 300 (2001), p.52.

[2] K. Chen, L.R. Zhao and S.T. John. Mater Sci and Eng A, 360 (2003), p.197.

[3] C.M.F. Race, M.S.A. Karumaratne and C.J. Small. In: T.M. Pollock et al., editors. Superalloys 2000, TMS, (2000), P. 767.

[4] A.C. Yeh, S. Tin. Scripta Mater, 52 (2005), p.519.

[5] H. Zhou, Y. Ro and Y.H. Harada. Mater Sci and Eng A, 381 (2004), p.21.

[6] D. Argence, C. Vernault. In: T.M. Pollock et al., editors. Superalloys 2000, TMS, (2000), P. 821.

[7] Q. Feng., T.K. Nandy, T.M. Pollock. Mater Sci and Eng A, 373 (2004), p.239.

[8] A.C. Yeh, S. Tin. Scripta Materialia 52 (2005), p.519.

[9] Y. Koizumi, T. Kobayashi, T. Yokokawa. In: K.A. Green, et al., editors. Superalloys 2004, TMS, (2004), P. 35.