A New Deformation Mechanism in Nanoscale Fe-C Composite as a Result of a Stress-Induced α→γ Transformation


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Recent studies of nanocrystalline materials have often found that the deformation mechanisms are radically different to those in coarse-grained materials, resulting in quite different mechanical properties for such materials. The use of pearlitic steels for the study of the deformation mechanisms in bcc materials with ultrafine grain sizes is quite convenient, because it is relatively straightforward to obtain a homogenous nanocrystalline structure with a mean grain size as small as 10 nm using various modes of severe plastic deformation (SPD). In this paper we show that highpressure torsion of an initially pearlitic steel results in a nanostructured steel in which austenite has been formed at or close to room temperature. The orientation relationship between neighboring ferrite and austenite grains is the well-known Kurdjumov-Sachs orientation relationship, i.e. the same observed in temperature-induced martensitic transformation of iron and steels. It is shown that this must have resulted from a reverse martensitic transformation promoted by the high shear strains experienced by the material during severe plastic deformation of the nanocrystalline structure. This transformation represents an alternative deformation mechanism that can be activated when conventional deformation mechanisms such as slip of lattice dislocations become exhausted.



Materials Science Forum (Volumes 503-504)

Edited by:

Zenji Horita






J. Ivanisenko et al., "A New Deformation Mechanism in Nanoscale Fe-C Composite as a Result of a Stress-Induced α→γ Transformation", Materials Science Forum, Vols. 503-504, pp. 439-446, 2006

Online since:

January 2006




[1] R. Z. Valiev, I. V. Alexandrov, Y. T. Zhu and T. C. Lowe: J. Mater. Res. Vol. 17 (2002), p.5.

[2] H. Zhang, H. Wang, R. O. Scattergood, J. Narayan, C. C. Koch, A. V. Sergueeva and A. K. Mukherje: Appl. Phys. Lett. Vol. 81 (2002), p.823.

[3] D. Jia, Y. M. Wang, K. T. Ramesh, E. Ma, Y. T. Zhu and R. Z. Valiev: Appl. Phys. Lett. Vol. 79 (2001), p.611.

[4] J. Schiøtz, F. D. Ditolla and K. W. Jacobsen: Nature (London) Vol. 391 (1998), p.561.

[5] H. Van Swygenhoven: Science Vol. 296 (2002), p.66.

[6] V. Yamakov, D. Wolf, S. R. Phillpot, A. K. Mukherjee and H. Gleiter: Nature Materials Vol. 1 (2002), p.1.

[7] M. W. Chen, E. Ma, K. J. Hemker, H. W. Sheng, Y. M. Wang and X. M. Cheng: Science Vol. 300 (2003), p.1275.

[8] H. Van Swygenhoven: Science: Vol. 296 (2002), p.66.

[9] V. Yamakov, D. Wolf, M. Salasar, S.R. Phillpot and H Gleiter: Acta Mater: Vol. 49 (2001), p.2713.

[10] D. Wolf, V. Yamakov, S.R. Phillpot, A. K. Mukherjee and H. Gleiter: Acta Mater: Vol. 53 (2005), p.1.

[11] X.Z. Liao, F. Zhou, E.J. Lavernia, S.G. Srinivasan, M.I. Baskes, D.W. He and Y.T. Zhu: Appl Phys Lett. Vol. 83 (2003) p.632.

[12] X.Z. Liao, Y.H. Zhao, S.G. Srinivasan, Y.T. Zhu, R.Z. Valiev and D.V. Gunderov: Appl Phys Lett. Vol. 84 (2004), p.592.

[13] J. Markmann, P. Bunzel, H. Rösner, K.W. Liu, K.A. Padmanahan, R. Birringer, H. Gleiter and J. Weissmüller: Scripta Mater. Vol. 49 (2003), p.637.

[14] A.V. Korznikov, Yu.V. Ivanisenko, D.V. Laptionok, I.M. Safarov, V. P Pilyugin and R.Z. Valiev: NanoSrtuctured Materials Vol. 4 (1994), p.159.

DOI: 10.1016/0965-9773(94)90075-2

[15] Yu. Ivanisenko, W. Lojkowski, R.Z. Valiev and H. -J. Fecht: Acta Mater. Vol. 51 (2003), p.5555.

[16] Yu. Ivanisenko, I. MacLaren, R.Z. Valiev and H. -J. Fecht, submitted to Nature Materials, (under consideration).

[17] G. Kurdjumov and G. Sachs: Z Phys Vol. 64 (1930), p.325.

[18] R.P. Agarwala, H. Wilman: Proc Phys Soc. Vol. 66B (1953), p.717.

[19] J. Barry and G. Byrne: Mat Sci Eng A Vol. A325 (2002), p.356.

[20] Z.G. Liu, H.J. Fecht, Y. Xu, J. Yin, K. Tsuchiya and M. Umemoto Mat Sci Eng A Vol. A362 (2003), p.322.

[21] E.Z. Scheil: Z. Anorg. Allg. Chem. Vol. 207 (1932), p.21.

[22] Z. Nishiyama: Martensitic Transformations. (Academic Press, New York 1978).

[23] J.R. Patel and M. Cohen: Acta Metal. Vol. 1 (1953) p.531.

[24] E. Hornbogen: Acta Metall. Vol. 33 (1985), p.595.

[25] J.P. Hirth and J. Lothe: Theory of dislocations. (Wiley, New York 1982).

[26] A. Latapie and D. Farkas: Modelling Simul. Mat Sci Eng A Vol. 11 (2003) p.745.

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