Journal of Materials Science

, Volume 21, Issue 8, pp 2933–2937 | Cite as

Size distribution of martensite plates in an Fe-Ni-Mn alloy

  • G. Ghosh


In this paper, the size distribution of the martensite plates in an Fe-23.2 Ni-2.81 Mn (wt%) alloy, which transforms isothermally at subzero temperatures, is reported. The distribution of the martensite plates has been determined as a function of the reaction temperature, volume fraction of martensite, the austenitic grain size, a superimposed elastic stress and prior plastic strain (at room temperature) of austenite. Increasing the driving force either by decreasing the reaction temperature or by a superimposed elastic stress changes the size distribution by enhancing the extent of radial growth of the martensite plates. Pre-straining of austenite does not allow the martensite plates to grow to the full extent. The present results show that the radial growth of the martensite plates increases with increasing driving force and decreases due to work-hardening of austenite. The transformation is found to progress through a combination of the spreading-out of clusters and filling-in of pockets, both occurring simultaneously. However, the extent of filling-in, i.e. compartmentalization of austenite grains, is more in the coarse-grained (0.09 mm) and medium-grained (0.048 mm) specimens compared to that in the fine-grained (0.019 mm) specimens.


Polymer Grain Size Austenite Martensite Reaction Temperature 
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  1. 1.
    J. R. C. Guimarães and J. C. Gomes, Met. Trans. 10A (1979) 109.Google Scholar
  2. 2.
    Idem, Acta Metall. 26 (1978) 1591.Google Scholar
  3. 3.
    J. R. C. Guimarães and L. P. M. Brandao, Scripta Metall. 14 (1980) 305.Google Scholar
  4. 4.
    M. G. Mendiratta and G. Krauss, Met. Trans. 3 (1972) 1755.Google Scholar
  5. 5.
    P. H. Chang, H. Rubin, P. G. Winchell and G. L. Leidl, Scripta Metall. 16 (1982) 531.Google Scholar
  6. 6.
    W. Y. C. Chen and P. G. Winchell, Met. Trans. 7A (1976) 1177.Google Scholar
  7. 7.
    W. Y. C. Chen, E. N. Jones and P. G. WinChell, ibid. 9A (1978) 1659.Google Scholar
  8. 8.
    R. Datta and V. Raghavan, Mater. Sci. Engng. 55 (1982) 239.Google Scholar
  9. 9.
    R. L. Fullman, Trans. AIME 197 (1953) 447.Google Scholar
  10. 10.
    V. Raghavan, PhD thesis, University of Sheffield (1964).Google Scholar
  11. 11.
    S. A. Saltykov, “Stereometric Metallography”, 2nd edn (Metallurgizdat, Moscow, 1948).Google Scholar
  12. 12.
    R. T. Dehoff, Trans. AIME 224 (1962) 474.Google Scholar
  13. 13.
    G. A. Knorovsky, ScD thesis, MIT, Cambridge, Massachusetts (1977).Google Scholar
  14. 14.
    G. Ghosh and V. Raghavan, Mater. Sci. Engng. in press.Google Scholar
  15. 15.
    J. C. Fisher, J. H. Hollomon and D. Turnbull, Trans. AIME 185 (1949) 691.Google Scholar
  16. 16.
    V. Raghavan, Acta Metall. 17 (1969) 1299.Google Scholar
  17. 17.
    G. Krauss and A. R. Marder, Met. Trans. 2 (1971) 2343.Google Scholar
  18. 18.
    J. R. Patel and M. Cohen, Acta Metall., 1 (1953) 531.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1986

Authors and Affiliations

  • G. Ghosh
    • 1
  1. 1.Materials Science Laboratory, Department of Applied MechanicsIndian Institute of TechnologyNew DelhiIndia

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