Skip to main content
SpringerLink
Log in

Element Segregation and Solidification Behavior of a Nb, Ti, Al Co-Strengthened Superalloy ЭК151

  • Published:
Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The as-cast microstructure, element segregation and solidification behavior of a multi-alloyed superalloy ЭК151 have been investigated. The results show that the severe element segregation leads to the complicated precipitations at the inter-dendritic region, including η-Ni3(Ti, Nb), eutectic (γ + γ′) and Laves, which shows the characteristics of both Ti, Al-strengthened and Nb-strengthened alloys. Differential thermal analysis, heating and quenching tests reveal the solidification sequence as follows: Liquids → γ matrix → (Nb, Ti)C → η-Ni3(Ti, Nb) → eutectic (γ + γ′) → Laves. The melting points are between 1250 and 1260 °C for (Nb, Ti)C, between 1200 and 1210 °C for η phase, between 1180 and 1190 °C for eutectic (γ + γ′) and Laves. γ′ initially precipitates from matrix at 1150 °C and achieves the maximum precipitation at 1130 °C. According to the microstructure evolution captured during solidification and composition analysis by an energy dispersive spectrometer and electron probe microanalyzer, (Nb, Ti)/Al ratio is put forward to explain the formation of η-Ni3(Ti, Nb) and eutectic (γ + γ′). The solidification of γ matrix increased the Nb, Ti concentration in the residual liquids, so the high (Nb, Ti)/Al ratio would result in the formation of η-Ni3(Ti, Nb); the precipitation of the phase consumed Nb and Ti and decreased the (Nb, Ti)/Al ratio in the liquid, which led to the precipitation of eutectic (γ + γ′). Laves formed by the sides of η-Ni3(Ti, Nb) and in front of the eutectic (γ + γ′) after Al, Ti were further depleted by the two phases and Cr, Co, Mo were rejected to liquids.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

  1. E.B. Chabina, B.S. Lomberg, E.V. Filonova, S.V. Ovsepyan, M.M. Bakradze, Trudy VIAM 9, 3 (2015)

    Article  Google Scholar 

  2. M.M. Bakradze, S.V. Ovsepyan, S.A. Shugaev, M.N. Letnikov, Trudy VIAM 9, 1 (2013)

    Google Scholar 

  3. Z.N. Bi, J.L. Qu, J.H. Du, X.Y. Peng, C.S. Yi, X.L. Peng, J. Iron Steel Res. Int. 23, 263 (2011)

    Google Scholar 

  4. M.M. Bakradze, B.S. Lomberg, S.A. Sidorov, M.V. Bubnov, Trudy VIAM 6, 2 (2017)

    Article  Google Scholar 

  5. Z.N. Bi, J.L. Qu, J.H. Du, X.Y. Peng, C.S. Yi, X.L. Peng, Rare Metal Mater. Eng. 42, 919 (2013)

    Google Scholar 

  6. G.D. Zhao, L.X. Yu, F. Qi, F. Liu, W.R. Sun, Z.Q. Hu, Acta Metall. Sin. (Engl. Lett.) 29, 518 (2016)

    Article  Google Scholar 

  7. Z.J. Miao, A.D. Shan, Y.B. Wu, J. Lu, Y. Hu, J.L. Liu, H.W. Song, Trans. Nonferrous Met. Soc. China 22, 318 (2012)

    Article  Google Scholar 

  8. H.W. Zhang, X.Z. Qin, X.W. Li, L.Z. Zhou, Mater. Sci. Eng. A 711, 303 (2018)

    Article  Google Scholar 

  9. H.W. Zhang, X.Z. Qin, X.W. Li, L.Z. Zhou, Acta Metall. Sin. (Engl. Lett.) 53, 684 (2017)

    Google Scholar 

  10. L.T. Chang, H. Jin, W.R. Sun, J. Alloys Compd. 653, 266 (2015)

    Article  Google Scholar 

  11. A.W. Zhang, Y. Yang, S. Zhang, D. Zhang, W.H. Zhang, D.W. Han, F. Qi, Y.G. Tan, X. Xin, W.R. Sun, Acta Metall. Sin. (Engl. Lett.) (2018). https://doi.org/10.1007/s40195-018-0834-1

    Google Scholar 

  12. L. Wang, J.X. Dong, Y.L. Tian, J. Univ. Sci. Technol. Beijing Miner. Metall. Mater. 15, 594 (2008)

    Google Scholar 

  13. Z.J. Miao, A.D. Shan, W. Wang, L.U. Jun, X.U. Wen-Liang, H.W. Song, Trans. Nonferrous Met. Soc. China 21, 236 (2011)

    Article  Google Scholar 

  14. B.L. Sheng, X.W. Wei, Acta Metall. Sin. (Engl. Lett.) 16, 335 (2003)

    Google Scholar 

  15. Z. Li, G.Q. Zhang, Z.H. Zhang, S.F. Tian, Acta Metall. Sin. (Engl. Lett.) 17, 205 (2004)

    Google Scholar 

  16. J. Hou, F.F. Han, X.X. Ye, B. Leng, M. Liu, Y.L. Liu, X.T. Zhou, Acta Metall. Sin. (Engl. Lett.) 32, 401 (2019)

    Article  Google Scholar 

  17. D.H. Kim, Acta Metall. Sin. (Engl. Lett.) 18, 33 (2005)

    Google Scholar 

  18. S.S. Seo, I.S. Kim, J.H. Lee, C.Y. Jo, H. Miyahara, K. Ogi, Trans. A-Phys. Metall. Mater. Sci. 38, 883 (2007)

    Article  Google Scholar 

  19. J.J. Ruan, N. Ueshima, K. Oikawa, J. Alloys Compd. 737, 83 (2018)

    Article  Google Scholar 

  20. Y.F. Guo, M.Y. Sun, B. Xu, D.Z. Li, J. Mater. Process. Technol. 249, 202 (2017)

    Article  Google Scholar 

  21. G.D. Zhao, G.L. Yang, F. Liu, Acta Metall. Sin. (Engl. Lett.) 30, 887 (2017)

    Article  Google Scholar 

  22. E.V. Melnik, Dopovidi Akademii Nauk Ukrainskoi Rsr Seriya a-Fiziko-Matematichni Ta Technichni Nauki 10, 949 (1974)

    Google Scholar 

  23. Y.C. Wang, G.L. Wu, C.H. Zhao, J. Dong, T. Yu, J. Iron Steel Res. Int. 23, 64 (2011)

    Google Scholar 

  24. X.L. Pan, W.R. Sun, Z. Li, S.L. Yang, S.R. Guo, H.C. Yang, Z.Q. Hu, Rare Metal Mater. Eng. 39, 55 (2010)

    Article  Google Scholar 

  25. S.H. Chen, M.J. Zhao, L.J. Rong, Acta Metall. Sin. 48, 1335 (2012)

    Article  Google Scholar 

  26. C.Y. Cui, Y.F. Gu, D.H. Ping, H. Harada, T. Fukuda, Mater. Sci. Eng. A 485, 651 (2008)

    Article  Google Scholar 

  27. J. Guo, Material Science and Engineering for Superalloys (Science Press, Beijing, 2008)

    Google Scholar 

  28. H. Li, H. Song, W. Liu, Metall. Mater. Trans. A 2, 915 (2019)

    Article  Google Scholar 

  29. T. Hara, S. Kobayashi, T. Ueno, K. Oikawa, J. Cryst. Growth 506, 91 (2019)

    Article  Google Scholar 

  30. D.W. Han, F. Liu, B. Zhang, W.R. Sun, Acta Metall. Sin. (Engl. Lett.) 31, 1224 (2018)

    Article  Google Scholar 

  31. L.X. Yu, W.R. Sun, Z.B. Zhang, W.H. Zhang, F. Liu, X. Xin, F. Qi, D. Jia, Z.Q. Hu, Mater. Res. Innov. 19, 68 (2015)

    Article  Google Scholar 

  32. M. Yamamoto, A. Nitta, T. Ogata, J. Soc. Mater. Sci. Jpn. 50, 510 (2001)

    Article  Google Scholar 

  33. C.Y. Jo, N. Jones, S.J. Choe, D. Knowles, Met. Mater. Int. 4, 1017 (1998)

    Article  Google Scholar 

  34. R. Bao, Y.I. Jian-Hong, Y.D. Peng, H.Z. Zhang, L.I. Ai-Kun, Trans. Nonferrous Met. Soc. China 22, 853 (2012)

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China

    Yuan-Guo Tan, Fang Liu, An-Wen Zhang, Da-Wei Han, Xiao-Yu Yao, Wei-Wei Zhang & Wen-Ru Sun

  2. University of Science and Technology of China, Hefei, 230026, China

    Yuan-Guo Tan, An-Wen Zhang, Xiao-Yu Yao & Wei-Wei Zhang

Authors
  1. Yuan-Guo Tan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Fang Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. An-Wen Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Da-Wei Han
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Xiao-Yu Yao
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Wei-Wei Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Wen-Ru Sun
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Wen-Ru Sun.

Additional information

Available online at http://link.springer.com/journal/40195

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Tan, YG., Liu, F., Zhang, AW. et al. Element Segregation and Solidification Behavior of a Nb, Ti, Al Co-Strengthened Superalloy ЭК151. Acta Metall. Sin. (Engl. Lett.) 32, 1298–1308 (2019). https://doi.org/10.1007/s40195-019-00894-3

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s40195-019-00894-3

Keywords

Search

Navigation