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Journal of Materials Science

, Volume 41, Issue 9, pp 2581–2585 | Cite as

The role of deformation twinning in the formation of a fine-grained structure in cold-rolled 310 steels

  • T. Morikawa
  • K. Higashida
Article

The role of deformation twinning in the formation of a fine-grained structure in cold-rolled 310S steels has been investigated by using transmission electron microscopy. When 310S steels were rolled at room temperature, a deformation twin appeared in the early stage of the rolling process. A fine lamellar structure consisting of the deformation twin and matrix (T-M) developed with increased rolling strain. At moderate strain, micro shear bands appeared in the area of the T-M lamellar structure, and the shear bands grew and multiplied during further cold-rolling. Such multiplication of shear bands destroyed the T-M lamellar structure, which caused the development of a fine-grained structure. In shear bands, a highly misoriented structure with a submicron grain size was generated. In this paper, the mechanism of the transmutation process from the T-M lamellae into the fine-grained structure is discussed. Particular emphasis is laid on the role of deformation twinning in the formation of the fine-grained structure.

Keywords

Polymer Grain Size Microscopy Electron Microscopy Transmission Electron Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Y. Iwahashi, Z. Horita, M. Nemoto and T. G. Langdon, Acta Mater. 45 (1997) 4733.CrossRefGoogle Scholar
  2. 2.
    Y. Saito, N. Tsuji, H. Utsunomiya, T. Sakai and R. G. Hong, Scripta Mater. 39 (1998) 1221.CrossRefGoogle Scholar
  3. 3.
    B. Bay, N. Hansen, D. A. Hughes and D. Kuhlmann-Wilsdorf, Acta Metall. Mater. 40 (1992) 205.CrossRefGoogle Scholar
  4. 4.
    T. Morikawa and K. Higashida, in Proceedings of the 21st Riso International Symposium on Material Science (RISO National Laboratory, Denmark, 2000) p. 467.Google Scholar
  5. 5.
    N. Narita and J. Takamura, in Dislocations in Solids, vol.9 (Elsevier Science, Amsterdam, Holland, 1992) p. 135.Google Scholar
  6. 6.
    T. Morikawa, D. Senba, K. Higashida and R. Onodera, Metal Trans. JIM 40 (1999) 891.Google Scholar

Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringFaculty of Engineering, Kyushu UniversityNishi-kuJapan
  2. 2.Department of Materials Science and EngineeringFaculty of Engineering, Kyushu UniversityNishi-kuJapan

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