Skip to main content
SpringerLink
Log in

Analysis of transformation superplastic deformation in pure iron

Deformationsanalysis der Umwandlungsplastizität bei Eisen

  • Published:
Ingenieur-Archiv Aims and scope Submit manuscript

Summary

Transformation superplastic deformation in pure iron is analysed. The transformation phenomenology is first studied when the material is exposed to the constant-rate cyclic temperature histories between 20°C and 1100°C. Transformation diagrams (T-T-A, T-T-T, C-H-T and C-C-T diagrams) are shown to be constructed by means of the transformation kinetics employed. Change in the fraction of austenite, or of ferrite, during the cyclic process is calculated. The deformation in thin-walled tubular specimen is then estimated when it is exposed under a constant tensile or torsional stress to the temperature cyclings. Accumulation of the superplastic deformation due to A 3 transformation is shown to be well simulated by the theory presented here.

Übersicht

Die superplastische Deformation während der allotropen Umwandlung bei Eisen, A 3 (Austenit ⇌ Ferrit)-Umwandlung, wird analysiert. Die Umwandlungsphänomenologie wird theoretisch diskutiert, wenn das Material einer zyklischen Temperaturgeschichte zwischen 20°C und 1100°C ausgesetzt wird. Es wird gezeigt, daß man Umwandlungsdiagramme mit Hilfe der vorgeschlagenen Umwandlungskinetik gut konstruieren kann. Die Austenitbildung oder die Ferritbildung während des zyklischen Prozesses wird berechnet. Die Deformation von dünnwandigen, rohrförmigen Proben wird dann analysiert, wenn sie bei konstanter Zugspannung oder Torsionsspannung gleichzeitig durch ein zyklisches Temperaturfeld belastet werden. Die Ergebnisse zeigen, daß die akkumulierende Superplastizitätsdeformation von der Theorie gut beschrieben werden kann.

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

Similar content being viewed by others

References

  1. Padmanabhan, K. A.; Davies, G. J.: Superplasticity, Chap. 5. Berlin, Heidelberg, New York: Springer 1980. This book contains an extensive bibliography published so far

    Google Scholar 

  2. Gittus, J. H.: Superplasticity, in Hopkins, H. G.: Sewell, M. J. (eds.): Mechanics of solids. Oxford: Pergamon Press 1982, pp. 227–263

    Google Scholar 

  3. Tamura, T.: Deformation-induced martensitic transformation and transformation-induced plasticity in steels. Met. Sci. 16 (1982) 245–253

    Google Scholar 

  4. De Jong, M.; Rathenau, G. W.: Mechanical properties of iron and some iron alloys while undergoing allotropic transformation. Acta Metall. 7 (1959) 246–253

    Google Scholar 

  5. Clinard, F. W.; Sherby, O. D.: Strength of iron during allotropic transformation. Acta Metall. 12 (1964) 911–919

    Google Scholar 

  6. Petsche, S.; Stangler, F.: Umwandlungsplastizität (dynamische Superplastizität) bei Eisen. Z. Metallkd. 62 (1971) 601–605

    Google Scholar 

  7. Nishihara, T.; Asami, K.; Iguchi, N.: On the viscoelastic behavior under transformation superplasticity. J. Japan Inst. Metals 38 (1977) 188–193. In Japanese

    Google Scholar 

  8. Tanaka, K.; Iwasaki, R.: A phenomenological theory of transformation superplasticity. Eng. Fract. Mech. 16 (1984) in press

  9. Edelen, D. G. B.: Primitive thermodynamics. A new look at the Clausius-Duhem inequality: Int. J. Eng. Sci. 12 (1974) 121–141

    Google Scholar 

  10. Eringen, A. C.: Thermodynamics of continua, in A. C. Eringen (ed.), Continuous Physics, Part I-3. New York: Academic Press 1975

    Google Scholar 

  11. Burke, J.: The kinetics of phase transformations in metals. London: Pergamon Press 1965

    Google Scholar 

  12. Tanaka, K.; Iwasaki, R.; Nagaki, S.: On T-T-T and C-C-T diagrams of steels: A phenomenological approach to transformation kinetics. Ing. Arch. 54 (1984) 81–90

    Google Scholar 

  13. Tanaka, K.; Nagaki, S.: A thermomechanical description of materials with internal variables in the process of phase transitions. Ing. Arch 51 (1982) 287–299

    Google Scholar 

  14. Iguchi, N.; Oka, Y.; Saotome, Y.: Transformation superplasticity in pure-iron under rapid heating. J. Japan Inst. Met. 38 (1974) 725–730. In Japanese

    Google Scholar 

  15. Saotome, Y.; Iguchi, N.: Some observation on transformation superplastic deformation in pure iron with high temperature microscope. Proc. 22nd Japan Congr. Mater. Res. (1979) 7–12

  16. Moffatt, W. G.; Pearsall, G. W.; Wulff, J.: The structure and properties of materials, vols. I and II. New York: John. & Sons 1964

    Google Scholar 

  17. Johnson, W. A.; Mehl, R. F.: Reaction kinetics in processes of nucleation and growth. Trans. AIMM 135 (1939) 416–459

    Google Scholar 

  18. Pearson, W. A.: A handbook of lattice spacings and structures of metals and alloys, pp. 625–627. New York: Pergamon Press 1958

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Aeronautical Engineering, University of Osaka Prefecture, 591 Sakai, Osaka, Japan

    K. Tanaka, R. Iwasaki & Y. Sato

Authors
  1. K. Tanaka
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. R. Iwasaki
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Y. Sato
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tanaka, K., Iwasaki, R. & Sato, Y. Analysis of transformation superplastic deformation in pure iron. Ing. arch 54, 309–320 (1984). https://doi.org/10.1007/BF00532557

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00532557

Keywords

Search

Navigation