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Effect of Silicon Content on the Microstructure and Mechanical Properties of Niobium–Silicon Alloy

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The microstructure and high-temperature mechanical properties of samples of (1 − х)(Nb–9Mo–13Ti–4Hf–4Zr–4Al–4Сr)–хSi alloy, where x = 5, 10, 15, and 20 at % of Si are studied. An alloy with 15 at % Si displays the highest strength characteristics (tensile strength and coefficient of stress concentration during bending at room temperature, bending strength at 1300°C). Alloy samples with 15 at % Si also display the highest 100-hour strength when tested in creep mode at temperatures of 1200 and 1300°C. Mechanisms of deformation are proposed for the investigated alloys.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 16-02-00384.

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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    M. I. Karpov, V. I. Vnukov, T. S. Stroganova, D. V. Prokhorov, I. S. Zheltyakova, B. A. Gnesin & V. M. Kiiko

  2. National Scientific Research Institute of Aviation Materials, 105005, Moscow, Russia

    I. L. Svetlov

  3. Tolyatti State University, 445020, Tolyatti, Samara oblast, Russia

    M. I. Karpov

Authors
  1. M. I. Karpov
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  2. V. I. Vnukov
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  3. T. S. Stroganova
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  4. D. V. Prokhorov
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  5. I. S. Zheltyakova
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  6. B. A. Gnesin
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  7. V. M. Kiiko
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  8. I. L. Svetlov
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Corresponding author

Correspondence to T. S. Stroganova.

Additional information

Translated by I. Obrezanova

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Karpov, M.I., Vnukov, V.I., Stroganova, T.S. et al. Effect of Silicon Content on the Microstructure and Mechanical Properties of Niobium–Silicon Alloy. Bull. Russ. Acad. Sci. Phys. 83, 1235–1243 (2019). https://doi.org/10.3103/S1062873819100113

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  • DOI: https://doi.org/10.3103/S1062873819100113

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