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Hot deformation characteristics of as-cast high-Cr ultra-super-critical rotor steel with columnar grains

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Abstract

Isothermal hot compression tests of as-cast high-Cr ultra-super-critical (USC) rotor steel with columnar grains perpendicular to the compression direction were carried out in the temperature range from 950 to 1250°C at strain rates ranging from 0.001 to 1 s−1. The softening mechanism was dynamic recovery (DRV) at 950°C and the strain rate of 1 s−1, whereas it was dynamic recrystallization (DRX) under the other conditions. A modified constitutive equation based on the Arrhenius model with strain compensation reasonably predicted the flow stress under various deformation conditions, and the activation energy was calculated to be 643.92 kJ∙mol−1. The critical stresses of dynamic recrystallization under different conditions were determined from the work-hardening rate (θ)–flow stress (σ) and −∂θ/∂σ–σ curves. The optimum processing parameters via analysis of the processing map and the softening mechanism were determined to be a deformation temperature range from 1100 to 1200°C and a strain-rate range from 0.001 to 0.08 s−1, with a power dissipation efficiency η greater than 31%.

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References

  1. M.I. Isik, A. Kostka, V.A. Yardley, K.G. Pradeep, M.J. Duarte, P.P. Choi, D. Raabe and G. Eggeler, The nucleation of Mo-rich Laves phase particles adjacent to M23C6 micrograin boundary carbides in 12% Cr tempered martensite ferritic steels, Acta Mater., 90(2015), p. 94.

    Article  Google Scholar 

  2. G. Götz and W. Blum, Influence of thermal history on precipitation of hardening phases in tempered martensite 10%Cr-steel X12CrMoWVNbN 10-1-1, Mater. Sci. Eng. A, 348(2003), No. 1-2, p. 201.

    Article  Google Scholar 

  3. F. Chen, Z.S. Cui, D.S. Sui, and B. Fu, Recrystallization of 30Cr2Ni4MoV ultra-super-critical rotor steel during hot deformation: Part III. Metadynamic recrystallization, Mater. Sci. Eng. A, 540(2012), p. 46.

    Article  Google Scholar 

  4. F. Chen, Z.S. Cui, and S.J. Chen, Recrystallization of 30Cr2Ni4MoV ultra-super-critical rotor steel during hot deformation: Part I. Dynamic recrystallization, Mater. Sci. Eng. A, 528(2011), No. 15, p. 5073.

    Article  Google Scholar 

  5. J. Hald, Microstructure and long-term creep properties of 9-12% Cr steels, Int. J. Pressure Vessels Piping, 85(2008), No. 1-2, p. 30.

    Article  Google Scholar 

  6. R.L. Klueh and A.T. Nelson, Ferritic/martensitic steels for next-generation reactors, J. Nucl. Mater., 371(2007), No. 1-3, p. 37.

    Article  Google Scholar 

  7. M.C. Flemings, Solidification processing, Metall. Trans., 5(1974), p. 2121.

    Article  Google Scholar 

  8. G.W. Liu, Y. Han, Z.Q. Shi, J.P. Sun, D.N. Zou, and G.J. Qiao, Hot deformation and optimization of process parameters of an as-cast 6Mo superaustenitic stainless steel: a study with processing map, Mater. Des., 53(2014), p. 662.

    Article  Google Scholar 

  9. E.X. Pu, W.J. Zheng, J.Z. Xiang, Z.G. Song, and J. Li, Hot deformation characteristic and processing map of superaustenitic stainless steel S32654, Mater. Sci. Eng. A, 598(2014), p. 174.

    Article  Google Scholar 

  10. T. Xi, C.G. Yang, M. Babar Shahzad, and K. Yang, Study of the processing map and hot deformation behavior of a Cu-bearing 317LN austenitic stainless steel, Mater. Des., 87(2015), p. 303.

    Google Scholar 

  11. H. Mirzadeh and A. Najafizadeh, Hot deformation and dynamic recrystallization of 17-4 PH stainless steel, ISIJ Int., 53(2013), No. 4, p. 680.

    Article  Google Scholar 

  12. B.Z. Wang, W.T. Fu, Z.Q. Lv, P. Jiang, W.H. Zhang, and Y.J. Tian, Study on the hot deformation behavior of 12%Cr ultra- super-critical rotor steel, Mater. Sci. Eng. A, 487(2008), No. 1-2, p. 108.

    Article  Google Scholar 

  13. Z.H. Wang, W.T. Fu, B.Z. Wang, W.H. Zhang, Z.Q. Lv, and P. Jiang, Study on hot deformation characteristics of 12%Cr ultra-super-critical rotor steel using processing maps and Zener-Hollomon parameter, Mater. Charact., 61(2010), No. 1, p. 25.

    Article  Google Scholar 

  14. L. Zeng, M.Q. Xu, X.R. Ma, Y.J. Huang, S.G. Zhang, Q.D. Hu, and J.G. Li, Grain refinement and delta ferrite reduction of high Cr steel ingots by thermal control, ISIJ Int., 54(2014), No. 10, p. 2302.

    Article  Google Scholar 

  15. C. Zhang, L.W. Zhang, W.F. Shen, C.R. Liu, Y.N. Xia, and R.Q. Li, Study on constitutive modeling and processing maps for hot deformation of medium carbon Cr-Ni-Mo alloyed steel, Mater. Des., 90(2016), p. 804.

    Google Scholar 

  16. Z.Y. Ding, S.G. Jia, P.F. Zhao, M. Deng, and K.X. Song, Hot deformation behavior of Cu-0.6Cr-0.03Zr alloy during compression at elevated temperatures, Mater. Sci. Eng. A, 570(2013), p. 87.

    Article  Google Scholar 

  17. Y. Han, D.N. Zou, Z.Y. Chen, G.W. Fan, and W. Zhang, Investigation on hot deformation behavior of 00Cr23Ni4N duplex stainless steel under medium-high strain rates, Mater. Charact., 62(2011), No. 2, p. 198.

    Article  Google Scholar 

  18. D. Ponge and G. Gottstein, Necklace formation during dynamic recrystallization: mechanisms and impact on flow behavior, Acta Mater., 46(1998), No. 1, p. 69.

    Article  Google Scholar 

  19. J. Luo, L.F. Wang, S.F. Liu, and M.Q. Li, The correlation between the flow behavior and the microstructure evolution during hot working of TC18 alloy, Mater. Sci. Eng. A, 654(2016), p. 213.

    Article  Google Scholar 

  20. H. Farnoush, A. Momeni, K. Dehghani, J. Aghazadeh Mohandesi, and H. Keshmiri, Hot deformation characteristics of 2205 duplex stainless steel based on the behavior of constituent phases, Mater. Des., 31(2010), No. 1, p. 220.

    Article  Google Scholar 

  21. G.R. Ebrahimi, H. Keshmiri, A.R. Maldar, and A. Momeni, Dynamic recrystallization behavior of 13%Cr martensitic stainless steel under hot working condition, J. Mater. Sci. Technol., 28(2012), No. 5, p. 467.

    Article  Google Scholar 

  22. C.M. Sellars and W.J. McG. Tegart, Hot workability, Int. Metall. Rev., 17(1972), No. 1, p. 1.

    Google Scholar 

  23. J. Wang, G.Q. Zhao, L. Chen, and J.L. Li, A comparative study of several constitutive models for powder metallurgy tungsten at elevated temperature, Mater. Des., 90(2016), p. 91.

    Google Scholar 

  24. E.I. Poliak and J.J. Jonas, A one-parameter approach to determining the critical conditions for the initiation of dynamic recrystallization, Acta Mater., 44(1996), No. 1, p. 127.

    Article  Google Scholar 

  25. N.D. Ryan and H.J. McQueen, Dynamic softening mechanisms in 304 austenitic stainless steel, Can. Metall. Q, 29(1990), No. 2, p. 147.

    Article  Google Scholar 

  26. D.Q. Dong, F. Chen, and Z.S. Cui, A physically-based constitutive model for SA508 steel: modeling and experimental verification, Mater. Sci. Eng. A, 634(2015), p. 103.

    Article  Google Scholar 

  27. Y. Han, H. Wu, W. Zhang, D.N. Zou, G.W. Liu, and G.J. Qiao, Constitutive equation and dynamic recrystallization behavior of as-cast 254SMO super-austenitic stainless steel, Mater. Des., 69(2015), p. 230.

    Article  Google Scholar 

  28. Y.V.R.K. Prasad, K.P. Rao, and S. Sasidhara, Hot Working Guide: a Compendium of Processing Maps, ASM, Ohio, 1997.

    Google Scholar 

  29. M. Sarebanzadeh, R. Mahmudi, and R. Roumina, Constitutive analysis and processing map of an extruded Mg-3Gd-1Zn alloy under hot shear deformation, Mater. Sci. Eng. A, 637(2015), p. 155.

    Article  Google Scholar 

  30. Y.S. Wu, M.C. Zhang, X.S. Xie, J.X. Dong, F.S. Lin, and S.Q. Zhao, Hot deformation characteristics and processing map analysis of a new designed nickel-based alloy for 700°C A-USC power plant, J. Alloys Compd., 656(2016), p. 119.

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Zong-ye Ding, Qiao-dan Hu, Long Zeng & Jian-guo Li

  2. Laboratory of Advanced Materials and Solidification, Shanghai Jiao Tong University, Shanghai, 200240, China

    Zong-ye Ding, Qiao-dan Hu, Long Zeng & Jian-guo Li

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  1. Zong-ye Ding
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  2. Qiao-dan Hu
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  3. Long Zeng
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  4. Jian-guo Li
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Correspondence to Qiao-dan Hu.

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Ding, Zy., Hu, Qd., Zeng, L. et al. Hot deformation characteristics of as-cast high-Cr ultra-super-critical rotor steel with columnar grains. Int J Miner Metall Mater 23, 1275–1285 (2016). https://doi.org/10.1007/s12613-016-1349-2

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  • DOI: https://doi.org/10.1007/s12613-016-1349-2

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