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The mechanism of nanostructured steel fracture at low temperatures

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Abstract

Microstructural aspects of deformation and fracture of steel which is nanostructured using the technique of equal-channel angular pressing and thermal processing at low temperature (−60°C) are considered in the paper. The methods of optical and atomic-force microscopy are used to investigate deformation surfaces. The fracture character change (from a brittle cleavage to a ductile shear) at low temperatures is shown to be associated, on the one hand, with a fuzzing of grain boundaries during pressing with solid structural phases and, on the other hand, by the replacement of the prevalent plastic deformation carriers.

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Authors and Affiliations

  1. Institute of Physical-Technical Problems of the North, Russian Academy of Sciences, ul. Oktyabr’skaya 1, Yakutsk, 6777980, Russia

    V. V. Lepov, A. M. Ivanov & V. S. Achikasova

  2. Moscow Institute of Electronic Technology (Technical University), Proezd 4806 5, Zelenograd, Moscow, 124498, Russia

    B. A. Loginov & V. A. Bespalov

  3. Moscow Engineering Physics Institute (State University) (MEPI), Kashirskoye Shosse 3, Moscow, 115409, Russia

    R. R. Zakirov & V. B. Loginov

Authors
  1. V. V. Lepov
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  2. A. M. Ivanov
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  3. B. A. Loginov
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  4. V. A. Bespalov
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  5. V. S. Achikasova
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  6. R. R. Zakirov
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  7. V. B. Loginov
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Corresponding author

Correspondence to V. V. Lepov.

Additional information

Original Russian Text © V.V. Lepov, A.M. Ivanov, B.A. Loginov, V.A. Bespalov, V.S. Achikasova, R.R. Zakirov, V.B. Loginov, 2008, published in Rossiiskie nanotekhnologii, 2008, Vol. 3, Nos. 11–12.

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Lepov, V.V., Ivanov, A.M., Loginov, B.A. et al. The mechanism of nanostructured steel fracture at low temperatures. Nanotechnol Russia 3, 734–742 (2008). https://doi.org/10.1134/S1995078008110116

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  • DOI: https://doi.org/10.1134/S1995078008110116

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