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Severe plastic deformation of amorphous alloys: I. Structure and mechanical properties

  • Proceedings of the V International Conference “Phase Transformations and Strength of Crystals”
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The basic regularities of variation in the structure and mechanical properties of amorphous Ni44Fe29Co15Si2B10 alloy at severe plastic deformation (SPD) in a Bridgman cell at different temperatures are considered. It is shown that SPD is accompanied by homogeneous nanocrystallization, which is caused by the plastic flow mode. The transition from inhomogeneous mode of plastic flow to a qualitatively different one has been detected. The SPD structural model of deformational “dissolving” of crystals is proposed to explain why nanocrystals no more than 10 nm in size are observed during SPD. It is found that thermally activated nanocrystallization may occur at very low temperatures (77 K) under very high stress and with a high concentration of excess free volume.

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Authors and Affiliations

  1. Bardin Central Research Institute for Ferrous Metallurgy (TsNIIchermet), Moscow, Russia

    A. M. Glezer, M. P. Plotnikova & A. V. Shalimova

  2. Baikov Institute for Metallurgy and Science of Materials, Russian Academy of Sciences, Moscow, Russia

    S. V. Dobatkin

Authors
  1. A. M. Glezer
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  2. M. P. Plotnikova
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  3. A. V. Shalimova
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  4. S. V. Dobatkin
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Corresponding author

Correspondence to A. M. Glezer.

Additional information

Original Russian Text © A.M. Glezer, M.P. Plotnikova, A.V. Shalimova, S.V. Dobatkin, 2009, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2009, Vol. 73, No. 9, pp. 1302–1309.

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Glezer, A.M., Plotnikova, M.P., Shalimova, A.V. et al. Severe plastic deformation of amorphous alloys: I. Structure and mechanical properties. Bull. Russ. Acad. Sci. Phys. 73, 1233–1239 (2009). https://doi.org/10.3103/S1062873809090123

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  • DOI: https://doi.org/10.3103/S1062873809090123

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