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Self-Propagating High-Temperature Synthesis in the Ti–Al–Si System

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Abstract—

Lightweight Ti–Al–Si intermetallic alloys with the compositions (wt %) 37Ti–50Al–13Si, 74.1Ti–6.3Al–19.6Si, and 41.53Ti–16.71Al–41.76Si have been prepared for the first time by self-propagating high-temperature synthesis (SHS). Using a 74.1 wt % Ti + 6.3 wt % Al + 19.6 wt % Si mixture, we have obtained a single-phase material with the composition Ti5Al0.75Si2.25, having a compressive strength of 19 MPa, average microhardness HVμ = 10 690 MPa, porosity of 41.5%, and hydrostatic density of 2.3 g/cm3.

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ACKNOWLEDGMENTS

We are grateful to I.D. Kovalev for performing the X-ray diffraction analysis and O.V. Belousova for measuring the porosity and density of our samples.

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Authors and Affiliations

  1. Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    P. A. Lazarev, A. E. Sytschev & O. D. Boyarchenko

  2. Aleksandr and Nikolai Stoletov State University, 600000, Vladimir, Russia

    P. A. Lazarev & A. V. Aborkin

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  1. P. A. Lazarev
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  2. A. E. Sytschev
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  3. O. D. Boyarchenko
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  4. A. V. Aborkin
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Correspondence to P. A. Lazarev.

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Translated by O. Tsarev

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Lazarev, P.A., Sytschev, A.E., Boyarchenko, O.D. et al. Self-Propagating High-Temperature Synthesis in the Ti–Al–Si System. Inorg Mater 57, 1201–1207 (2021). https://doi.org/10.1134/S002016852111008X

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