Skip to main content
SpringerLink
Log in

Increase in the Alpha to Gamma Transformation Temperature of Pure Iron upon Very Rapid Heating

  • Published:
Metallurgical and Materials Transactions A Aims and scope Submit manuscript

Abstract

In recent years, laser and electron beam welding techniques have been developed with heating rates reaching 1 million K/s, and nonequilibrium microstructures sometimes result. In the present study, the alpha (bcc) to gamma (fcc) transformation in pure iron is studied using a bank of storage batteries for heating and a high speed data acquisition system to monitor the temperature determined from a thermocouple spot welded to the specimen. Heating rates up to 300,000 K/s were obtained with the transformation temperature increasing from the equilibrium value of 1185 K (912 °C) to over 2200 K (1927 °C). The results are presented in terms of continuous heating and isothermal transformation curves.

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
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

References

  1. O.A. Boedtker: Ph.D. Thesis, California Institute of Technology, Pasadena, CA, 1961, <http://resolver.caltech.edu/CaltechETD:etd-03172006-110102>.

  2. W.L. Haworth and J.G. Parr: Trans. ASM, 1965, vol. 58, pp. 476–88.

    CAS  Google Scholar 

  3. X. He, P.W. Fuerschbach, and T. DebRoy: J. Phys. D Appl. Phys., 2003, vol. 36, pp. 1388–98.

    Article  CAS  ADS  Google Scholar 

  4. X. He, T. DebRoy, and P.W. Fuerschbach: J. Appl. Phys., 2003, vol. 36, pp. 3079–88.

    CAS  Google Scholar 

  5. K. Biswas and K. Chattopadhyay: Metall. Mater. Trans. A, 2007, vol. 38A, pp. 1395–1406.

    Article  CAS  ADS  Google Scholar 

  6. Metals Handbook, 10th ed., vol. 2, Properties and Selection: Nonferrous Alloys and Special Purpose Materials, Materials Park, OH, 1990, p. 1122.

  7. Metals Handbook, 10th ed., vol. 2, Properties and Selection: Nonferrous Alloys and Special Purpose Materials, Materials Park, OH, 1990, p. 1123.

  8. Metals Handbook, 10th ed., vol. 2, Properties and Selection: Nonferrous Alloys and Special Purpose Materials, Materials Park, OH, 1990, p. 1119.

  9. Y. Miwa and H. Ono: J. Jpn. Inst. Met., 1976, vol. 40, pp. 559–64.

    CAS  Google Scholar 

  10. J.R. Low and M. Gensamer: Trans. AIME, Iron Steel Div., 1944, vol. 158, pp. 207–49.

    Google Scholar 

  11. M.J. Bibby: Master’s Thesis, University of Alberta, Edmonton, AB, Canada, 1963.

  12. H. Oikawa: Technol. Rep. Tohoku Univ., 1982, vol. 47 (2), pp. 215–24.

    CAS  Google Scholar 

  13. Y. Miwa and N. Iguchi: J. Jap. Inst. Met., 1973, vol. 37, pp. 945–50.

    CAS  Google Scholar 

  14. G.R. Speich and A. Szirmae: Trans. AIME, 1969, vol. 245, pp. 1063–74.

    CAS  Google Scholar 

  15. Metals Handbook, 10th ed., vol. 2, Properties and Selection: Nonferrous Alloys and Special Purpose Materials, Material Park, OH, 1990, p. 1118.

  16. Metals Handbook, 10th ed., vol. 2, Properties and Selection: Nonferrous Alloys and Special Purpose Materials, Material Park, OH, 1990, p. 1127.

  17. J. Langner and J.R. Cahoon: University of Manitoba, Winnipeg, Manitoba, Canada, unpublished research, 2006.

Download references

Acknowledgments

The authors acknowledge the financial support of NSERC Canada in the form of an Undergraduate Research Fellowship (JL) and a Discovery Grant (JRC). The technical support of Kim Majury, John Van Dorp, Don Mardis, Dan McCooeye, and Mike Boskwick is gratefully acknowledged.

Author information

Authors and Affiliations

  1. Department of Mechanical and Manufacturing Engineering, University of Manitoba, Winnipeg, R3C2P4, Manitoba, Canada

    Jeremy Langner (Graduate Student, Renewable Energy Engineer in Training) & J.R. Cahoon (Senior Scholar)

  2. Customer Engineering Services, Manitoba Hydro, Winnipeg, R3T5V6, Manitoba, Canada

    Jeremy Langner (Graduate Student, Renewable Energy Engineer in Training)

Authors
  1. Jeremy Langner
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J.R. Cahoon
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to J.R. Cahoon.

Additional information

Manuscript submitted June 17, 2009.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Langner, J., Cahoon, J. Increase in the Alpha to Gamma Transformation Temperature of Pure Iron upon Very Rapid Heating. Metall Mater Trans A 41, 1276–1283 (2010). https://doi.org/10.1007/s11661-010-0175-9

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11661-010-0175-9

Keywords

Search

Navigation