Metal Science and Heat Treatment

, Volume 16, Issue 2, pp 144–146 | Cite as

Changes in the dislocation arrays of high-strength structural steel during fatigue

  • V. I. Bol'shakov
  • V. S. Zoteev
  • L. G. Orlov
  • M. A. Tylkin
Technical Information
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Conclusions

  1. 1.

    Transmission electron microscopy and limited-area diffraction analysis showed that cyclic deformation is accompanied by higher dislocation densities, fragmentation of martensite rods, thickening of the boundaries of fragments, and higher misorientation angles.

     
  2. 2.

    During cyclic loading the structure of the surface layers changes more than that of the inner layers.

     
  3. 3.

    The total plastic deformation at the level of the fatigue limit is quite small and is quite uneven through the volume of the sample.

     

Keywords

Electron Microscopy Fatigue Transmission Electron Microscopy Surface Layer Martensite 

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Literature cited

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    D. McLean, Mechanical Properties of Metals [Russian translation], Metallurgiya, Moscow (1965).Google Scholar
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    A. J. Kennedy, Creep and Fatigue in Metals [Russian translation], Metallurgiya, Moscow (1965).Google Scholar
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    V. I. Bol'shakov and L. G. Orlov, "Electron microscopic study of dislocation arrays in the inner and surface layers of deformed single crystals of iron silicide," Fiz. Tverd. Tela, 3, 745–751 (1970).Google Scholar
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    M. Kh. Shorshorov et al., in: Reports of the Eighth All-Union Conference on Electron Microscopy [in Russian], Vol. 2, Moscow (1971).Google Scholar
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    V. M. Goritskii, "Difference in plastic deformation in the surface and inner layers of polycrystalline iron during fatigue," Dokl. Akad. Nauk SSSR,205, 4 812–814 (1972).Google Scholar

Copyright information

© Consultants Bureau 1974

Authors and Affiliations

  • V. I. Bol'shakov
  • V. S. Zoteev
  • L. G. Orlov
  • M. A. Tylkin

There are no affiliations available

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