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Russian Metallurgy (Metally)

, Volume 2018, Issue 3, pp 276–281 | Cite as

Distribution of Alloying Elements over the Phase Constituents in Nb–Si in situ Composites

  • N. A. Kuz’mina
  • I. L. Svetlov
  • A. V. Neiman
Article

Abstract

The distribution of alloying elements over the phases in a eutectic Nb–Nb5Si3 composite material during directional solidification is studied. The influence of substitutional alloying elements on the type of structure in the reinforcing phase of silicide is analyzed. The crystal structures of the hexagonal and tetragonal modifications of the Nb5Si3 silicide are characterized and compared. The dependence of the creep resistance on the type of silicide structure is explained.

Keywords

natural niobium–silicon composites diffusion creep resistance 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • N. A. Kuz’mina
    • 1
  • I. L. Svetlov
    • 1
  • A. V. Neiman
    • 1
  1. 1.All-Russia Research Institute of Aviation Materials (VIAM)MoscowRussia

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