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Investigation of the Interphase Interaction at the Interface in the Ti–C System with Domestic Titanium Alloys of the α + β and Pseudo α Classes

  • NEW METHODS OF TREATMENT AND PRODUCTION OF MATERIALS WITH REQUIRED PROPERTIES
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Inorganic Materials: Applied Research Aims and scope

Abstract

Interaction of Ti–C with titanium alloys of α + β and pseudo α classes and formation of the reaction layer at the interface have been investigated. We used titanium α + β alloys VT6 (Ti–Al–V) and VT8 (Ti–Al–Mo–Si) as well as pseudo α alloy VT20 (Ti–Al–Zr–Mo–V). The structure and composition of the interfaces were investigated by means of TEM in the scanning beam mode and energy dispersive spectroscopy. It was ascertained that, already at the stage of production of the samples by thermal diffusion joining, interphase chemical interaction and formation of the reaction layers occurred. The reaction layer consists of distinct regions of small crystals (nanocrystals of TiC of 10–50 nm in size) and large grains of Ti8C5 100–500 nm in size. Most of the reaction layer consists of large grains of Ti8C5. It is found that the average thickness of the reaction layer varies depending on the Ti alloy type and is ~0.89 μm (VT6 alloy), ~0.97 μm (VT8 alloy), and ~0.51 μm (VT20 alloy). Additional heat treatment of the samples leads to increasing thickness of the reaction layer in all Ti–C/Ti alloy systems due to the growth of large grains of titanium carbide.

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ACKNOWLEDGMENTS

This study was prepared within the framework of implementation of complex research field 12.1: Metallic Composite Materials (MCM) Reinforced with Particles and Fibers of High-Melting Compounds (“Strategic Directions for the Development of Materials and Technologies for Their Processing for the Period up to 2030”).

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Authors and Affiliations

  1. All-Russian Scientific Research Institute of Aviation Materials (VIAM), 105005, Moscow, Russia

    D. V. Sidorov, V. M. Serpova, A. V. Zavodov & A. A. Shavnev

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  1. D. V. Sidorov
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  2. V. M. Serpova
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  3. A. V. Zavodov
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  4. A. A. Shavnev
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Correspondence to D. V. Sidorov, V. M. Serpova or A. A. Shavnev.

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Translated by K. Gumerov

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Sidorov, D.V., Serpova, V.M., Zavodov, A.V. et al. Investigation of the Interphase Interaction at the Interface in the Ti–C System with Domestic Titanium Alloys of the α + β and Pseudo α Classes. Inorg. Mater. Appl. Res. 12, 846–850 (2021). https://doi.org/10.1134/S2075113321030357

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  • DOI: https://doi.org/10.1134/S2075113321030357

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