Skip to main content
SpringerLink
Log in

Subcritical Spheroidization of Medium-Carbon 50CrV4 Steel

  • Published:
Journal of Materials Engineering and Performance Aims and scope Submit manuscript

    We’re sorry, something doesn't seem to be working properly.

    Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.

Abstract

An investigation on subcritical spheroidization anneal of the cold-rolled 50CrV4 steel at 720 °C has been carried out. During spheroidization anneal, the lamellar cementite was gradually broken down and changed to spherical shape. With prolonging of soaking time, the amount of lamellar cementite decreases gradually, and that of the spheroidized cementite particle increases gradually. The relationship of the spheroidization ratio versus soaking time for the steel can be described by a typically sigmoid curve. Additionally, the cold rolling deformation accelerates the breakup of lamellar cementite and the formation of spheroidal cementite particles during spheroidization anneal of the steel. The more severe the deformation is, the more rapidly the spheroidization occurs. From the results of tensile and hardness test, the yield strength, ultimate tensile strength, and hardness decrease and the percentage elongation to failure increases rapidly during the first 2 h of spheroidization. Between 2 and 8 h, the yield strength, ultimate tensile strength, hardness nearly keep a constant, which are independent of the soaking time, whereas the percentage elongation to failure firstly increases and then decreases with prolonging of soaking time.

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.

Institutional subscriptions

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

Similar content being viewed by others

References

  1. N.V. Luzginova, L. Zhao, and J. Sietsma, The Cementite Spheroidization Process in High-Carbon Steels with Different Chromium Contents, Metall. Mater. Trans. A, 2008, 39A, p 513–521

    Article  CAS  Google Scholar 

  2. J.M. O’Brien and W.F. Hosford, Spheroidization Cycles for Medium Carbon Steels, Metall. Mater. Trans. A, 2002, 33A, p 1255–1261

    Article  Google Scholar 

  3. J.M. O’Brien and W.F. Hosford, Spheroidizing of Medium Carbon Steels, 19th ASM Heat Treating Society Conference, S.J. Medea, G.D. Pfaffmann, Eds., Materials Park, Ohio, ASM, 2000, p 638–645.

  4. Y. Kanetsuki, M. Katsumata, and T. Inoue, Relation Between Fine Ferrite-Pearlite Microstructure Produced by Controlled Rolling and Cooling and the Subsequent Rapid Spheroidization of Medium Carbon Steel, J. Iron Steel Inst. Jpn., 1990, 76, p 73–80

    CAS  Google Scholar 

  5. J.M. O’Brien and W.F. Hosford, Spheroidization of Medium-Carbon Steels, J. Mater. Eng. Perform., 1997, 6, p 69–72

    Article  Google Scholar 

  6. E. Karadeniz, Influence of Different Initial Microstructure on the Process of Spheroidization in Cold Forging, Mater. Des., 2008, 29, p 251–256

    Article  CAS  Google Scholar 

  7. U.G. Gang, J.C. Lee, and W.J. Nam, Effect of Prior Microstructure on the Behavior of Cementite Particles During Subcritical Annealing of Medium Carbon Steels, Met. Mater. Int., 2009, 15, p 719–725

    Article  CAS  Google Scholar 

  8. V.V. Shkatov, A.P. Chernyshev, and V.I. Lizunov, Kinetics of Pearlite Spheroidization in Carbon Steel, Phys. Met. Metall., 1990, 70, p 116–121

    Google Scholar 

  9. Ö.E. Atasoy and S. Özbilen, Pearlite Pheroidization, J. Mater. Sci., 1989, 24, p 281–287

    Article  CAS  Google Scholar 

  10. L.E. Samuels, Optical Microscopy of Carbon Steels, ASM, Metals Park, OH, 1980, p 225–229

    Google Scholar 

  11. K.W. Andrews, Empirical Formulae for the Calculation of Some Transformation Temperatures, J. Iron Steel Inst., 1965, 203, p 721–727

    CAS  Google Scholar 

  12. Y.L. Tian and R.W. Kraft, Kinetics of Pearlite Spheroidization, Met. Trans. A, 1987, 18A, p 1359–1369

    Article  CAS  Google Scholar 

  13. Y.L. Tian and R.W. Kraft, Mechanisms of Pearlite Spheroidization, Met. Trans. A, 1987, 18A, p 1403–1414

    Article  CAS  Google Scholar 

  14. S.E. Nam and D.N. Lee, Accelerated Spheroidization of Cementite in High-Carbon Steel Wires by Drawing at Elevated Temperatures, J. Mater. Sci., 1987, 22, p 2319–2326

    Article  CAS  Google Scholar 

Download references

Acknowledgments

The study was supported by The Shanghai Postdoctoral Sustentation Fund under the contract No. 09R21420300. The authors gratefully acknowledge Dr. S. H. Xiang and Sr. Engineer H.M. Li, Research Institute, Baoshan Iron & Steel Co., Ltd., for the use of a vacuum furnace and laboratory facilities.

Author information

Authors and Affiliations

  1. Shanghai Baoyi Can Making Co., Ltd, Shanghai, 201908, China

    W. Y. Guo

  2. Research Institute, Baoshan Iron & Steel Co., Ltd, Shanghai, 201900, China

    J. Li

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

    X. F. Jiang

Authors
  1. W. Y. Guo
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. X. F. Jiang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to W. Y. Guo.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Guo, W.Y., Li, J. & Jiang, X.F. Subcritical Spheroidization of Medium-Carbon 50CrV4 Steel. J. of Materi Eng and Perform 21, 1003–1007 (2012). https://doi.org/10.1007/s11665-011-9957-5

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11665-011-9957-5

Keywords

Search

Navigation