Effect of Ti and Al on microstructure and partitioning behavior of alloying elements in Ni-based powder metallurgy superalloys

Yin-long Shao; Jing Xu; Hao Wang; Yi-wen Zhang; Jian Jia; Jian-tao Liu; Hai-liang Huang; Ming Zhang; Zhi-cheng Wang; Hong-fei Zhang; Ben-fu Hu

doi:10.1007/s12613-019-1757-1

Volume 26 Issue 4

Apr. 2019

Turn off MathJax

Article Contents

Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(4): 500-506

Yin-long Shao, Jing Xu, Hao Wang, Yi-wen Zhang, Jian Jia, Jian-tao Liu, Hai-liang Huang, Ming Zhang, Zhi-cheng Wang, Hong-fei Zhang, and Ben-fu Hu, Effect of Ti and Al on microstructure and partitioning behavior of alloying elements in Ni-based powder metallurgy superalloys, Int. J. Miner. Metall. Mater., 26(2019), No. 4, pp. 500-506. https://doi.org/10.1007/s12613-019-1757-1

Cite this article as:

Yin-long Shao, Jing Xu, Hao Wang, Yi-wen Zhang, Jian Jia, Jian-tao Liu, Hai-liang Huang, Ming Zhang, Zhi-cheng Wang, Hong-fei Zhang, and Ben-fu Hu, Effect of Ti and Al on microstructure and partitioning behavior of alloying elements in Ni-based powder metallurgy superalloys, Int. J. Miner. Metall. Mater., 26(2019), No. 4, pp. 500-506. https://doi.org/10.1007/s12613-019-1757-1

Citation:

PDF( 5992 KB)

Research Article

Effect of Ti and Al on microstructure and partitioning behavior of alloying elements in Ni-based powder metallurgy superalloys

+ Author Affiliations

Corresponding author:
Hao Wang E-mail: hwang@ustb.edu.cn
Received: 9 July 2018; Revised: 5 October 2018; Accepted: 8 October 2018

Abstract

Abstract

The microstructure and partitioning behaviors of alloying elements in the γ and γ' phases in Ni-based powder metallurgy superalloys with different Ti and Al contents were investigated. The results showed that Ti and Al were mainly enriched in the γ' phase, partially partitioned in the γ matrix, and slightly distributed in the carbides. Different Ti and Al contents in various alloys influenced the composition and amount of MC carbides but did not influence the MC carbides' morphology. With increasing Ti and Al contents, γ + γ' fan-type structures formed at the grain boundary, eventually resulting in a coarsened γ' phase. In addition, the morphology of the secondary γ' phase transformed from nearly spherical to cuboidal. The saturation degrees of Cr, Co, and Mo in the γ matrix were substantially improved with increasing Ti and Al contents.
- superalloy;
- Al;
- Ti;
- microstructure;
- partitioning

FullText(HTML)

Supplements(0)

References(17)

References

[1]	T.M. Pollock and S. Tin, Nickel-based superalloys for advanced turbine engines:chemistry, microstructure, and properties, J. Propul. Power, 22(2006), No. 2, p. 361.
[2]	R. Schafrik and R. Sprague, Saga of gas turbine materials:part, Ⅲ Adv. Mater. Process., 162(2004), No. 5, p. 27.
[3]	F. Pyczak, B. Devrient, F.C. Neuner, and H. Mughrabi, The influence of different alloying elements on the development of the γ/γ'microstructure of nickel-base superalloys during high-temperature annealing and deformation, Acta Mater., 53(2005), No. 14, p. 3879.
[4]	C. Carry and J.L. Strudel, Apparent and effective creep parameters in single crystals of a nickel base superalloy-Ⅱ. Secondary creep, Acta Metall., 26(1978), No. 5, p. 859.
[5]	H. Rouault-Rogez, M. Dupeux, and M. Ignat, High temperature tensile creep of CMSX-2 nickel base superalloy single crystals, Acta Metall. Mater., 42(1994), No. 9, p. 3137.
[6]	G.C. Huang, G.Q. Liu, M.N. Feng, M. Zhang, B.F. Hu, and H. Wang, The effect of cooling rates from temperatures above the γ'solvus on the microstructure of a new nickel-based powder metallurgy superalloy, J. Alloys Compd., 747(2018), p. 1062.
[7]	T.T. Wang, C.S. Wang, W. Sun, X.Z. Qin, J.T. Guo, and L.Z. Zhou, Microstructure evolution and mechanical properties of GH984G alloy with different Ti/Al ratios during long-term thermal exposure, Mater. Des., 62(2014), p. 225.
[8]	L.R. Liu, T. Jin, X.F. Sun, H.R. Guan, and Z.L. Hu, The effects of Al, Ti, and Ta contents on the microstructure of a nickel-based single crystal superalloy during aging, Rare Met. Mater. Eng., 37(2008), No. 7, p. 1253.
[9]	M.Q. Ou, Y.C. Ma, H.L. Ge, W.W. Xing, Y.T. Zhou, S.J. Zheng, and K. Liu, Microstructure evolution and mechanical properties of a new cast Ni-base superalloy with various Ti contents, J. Alloys Compd., 735(2017), p. 193.
[10]	F. Liu, W.R. Sun, S.L. Yang, Z. Li, S. Guo, H. Yang, and Z.Y. Hu, Effect of Al content on microstructure and stability of GH4169 nickel based alloy, Acta Metall. Sin., 44(2004), No. 7, p. 791.
[11]	L.R. Liu, G.Q. Zu, and T. Jin, Effect of titanium on the partition behavior of alloying elements in single crystal superalloys containing rhenium, Adv. Mater. Res., 634-638(2013), p. 1724.
[12]	Y.W. Zhang, F.M. Wang, and B.F. Hu, Effect of Hf content on γ/γ'lattice mismatches of FGH97 superalloy, Rare Met. Mater. Eng., 41(2012), No. 6, p. 989.
[13]	J.T. Guo, Materials Science and Engineering for Superalloys, Science Press, Beijing, 2008, p. 57.
[14]	W.W. Mullins and R.F. Sekerka, Morphological stability of a particle growing by diffusion or heat flow, J. Appl. Phys., 34(1963), No. 2, p. 323.
[15]	B.F. Hu, G.Q. Liu, K. Wu, and G.F. Tian, Morphological instability of γ'phase in nickel-based powder metallurgy superalloys, Acta Metall. Sin., 48(2012), No. 3, p. 257.
[16]	G.L. Chen, Superalloy, Metallurgical Industry Press, Beijing, 1988, p. 11.
[17]	Y.L. Xu, C.X. Yang, X.S. Xiao, X.L. Cao, G.Q. Jia, and Z. Shen, Evolution of microstructure and mechanical properties of Ti modified superalloy Nimonic 80 A, Mater. Sci. Eng. A, 530(2011), p. 315.