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Precipitation and residual stress relaxation kinetics in shot-peened Inconel 718

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Abstract

Mechanical surface treatment by shot peening followed by aging at 700 and 740 °C was performed on Inconel 718. A previously proposed XRD method (Ref 10) for the quantitative phase analysis of Inconel 718 allowed for the determination of the precipitation kinetics of the γ″ phase in the shot-peened layer and the matrix, respectively. The residual compressive stress field induced by shot peening and its relaxation behavior during aging were also determined. The relaxation process can be described by the Zener-Wert-Avrami function. The precipitation rate in the γ″ phase in the shot-peened layer is greatly accelerated, which causes differences in the γ″ phase amounts between the skin and the core during aging, especially during the initial stage. The high precipitation rate of the γ″ phase in the shot-peened layer can be interpreted by the nonequilibrium segregation of niobium.

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References

  1. C. Slama and M. Abdellaoui, Structural Characterization of the Aged Inconel 718,Alloys Compd., 2000,306, p 277–284

    Article  CAS  Google Scholar 

  2. M. Sundararaman, P. Mukhopadhyay, and S. Banerjee, Precipitation of δ-Ni3Nb Phase in Two Nickel Base Superalloys,Metall. Trans., 1988,19A, p 453–465

    CAS  Google Scholar 

  3. Y.F. Han, P. Deb, and M.C. Chaturvedi, Coarsening Behavior of γ″ and γ′ Particles in Inconel 718,Metal Sci., 1982,16, p 555–561

    Article  CAS  Google Scholar 

  4. W.C. Liu, F.R. Xiao, M. Yao, and Z.L. Chen, Influence of Cold Rolling on the Precipitation Kinetics of γ″ and δ Phases in Inconel 718 Alloy,J. Mater. Sci. Lett., 1998,17, p 245–249

    Article  CAS  Google Scholar 

  5. M.P. Singh, J.M. Hyzak, and J.M. Cloue, Effect of Cold Working on Microstructure and Mechanical Properties and SCC Behavior of Alloy 718,Superalloys 718, 625, 706 and Various Derivatives, E.A. Loria, Ed., TMS, 1994, p 751–761

  6. S. Wang, Y. Li, M. Yao, and R. Wang, Fatigue Limits of Shot-Peened Metals,J. Mater. Process. Technol., 1998,73, p 57–63

    Article  Google Scholar 

  7. M.C. Berger and J.K. Gregory, Residual Stress Relaxation in Shot-Peened Timetal 21s,Mater. Sci. Eng., 1999,A263, p 200–204

    CAS  Google Scholar 

  8. W. Liu, F. Xiao, M. Yao, Z. Chen, and W. Li, Quantitative Phase Analysis of Inconel 718 by X-Ray Diffraction,J. Mater. Sci. Lett., 1997,16, p 769–771

    Article  CAS  Google Scholar 

  9. R.B. Li, M. Yao, W.C. Liu, and X.C. He, Isolation and Determination of δ, γ′ and γ″ Phases in Inconel 718 Alloy,Scr. Mater., 2002,46, p 635–638

    Article  CAS  Google Scholar 

  10. S. Wang, Y. Liu, M. Yao, and R. Wang, Compressive Residual Stress Introduced by Shot Peening,J. Mater. Process. Technol., 1998,73, p 64–73

    Article  Google Scholar 

  11. W.C. Liu, M. Yao, Z.L. Chen, and S.G. Wang, Niobium Segregation in Inconel 718,J. Mater. Sci., 1999,34, p 1–4

    Article  Google Scholar 

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Authors and Affiliations

  1. Key Laboratory of Metastable Materials Science & Engineering, Yanshan University, 066004, Qinhuangdao, People’s Republic of China

    Dayong Cai, Pulin Nie, Jiaping Shan, Wenchang Liu & Mei Yao

  2. Institute of Aeronautical Materials, 100095, Beijing, People’s Republic of China

    Yukui Gao

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  1. Dayong Cai
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  2. Pulin Nie
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  3. Jiaping Shan
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  4. Wenchang Liu
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  5. Mei Yao
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  6. Yukui Gao
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Correspondence to Dayong Cai.

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Cai, D., Nie, P., Shan, J. et al. Precipitation and residual stress relaxation kinetics in shot-peened Inconel 718. J. of Materi Eng and Perform 15, 614–617 (2006). https://doi.org/10.1361/105994906X124613

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  • DOI: https://doi.org/10.1361/105994906X124613

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