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Structure and Phase Formation in Ni + Al Powder Mixture Enclosed in a Steel Cartridge during Hot Gas Extrusion

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Abstract

Stages of structure/phase formation in Ni + Al powder mixture enclosed in a steel cartridge in the course of hot gas extrusion (HGE) were studied. It was shown that the formation of target NiAl phase is preceded by the appearance of NiAl3, Ni2Al3, and Ni3Al phases. It was determined that the phase composition is formed prior to the onset of plastic deformation and retains constant in the course of extrusion process; meanwhile, the structure undergoes the changes, its grains are deformed, taking an elongated shape. It was found that HGE is characterized by a redistribution of elements. It can be assumed that to increase the target phase yield, it is necessary to compensate or eliminate the redistribution of elements.

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ACKNOWLEDGMENTS

This work was conducted using the set of modern scientific instruments available for multiple accesses at the Center of Shared Services of Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences.

Funding

This research was supported within the framework of the state task for Merzhanov Institute of Structural Macrokinetics and Materials Science of Russian Academy of Sciences.

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Authors and Affiliations

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

    F. F. Galiev, O. D. Boyarchenko, I. V. Saikov, A. E. Sytschev & M. I. Alymov

  2. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, 108840, Troitsk, Russia

    V. D. Berbetcev

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  1. F. F. Galiev
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  2. V. D. Berbetcev
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  3. O. D. Boyarchenko
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  4. I. V. Saikov
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  5. A. E. Sytschev
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  6. M. I. Alymov
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Correspondence to F. F. Galiev.

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Translated by O. Golosova

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Galiev, F.F., Berbetcev, V.D., Boyarchenko, O.D. et al. Structure and Phase Formation in Ni + Al Powder Mixture Enclosed in a Steel Cartridge during Hot Gas Extrusion. Int. J Self-Propag. High-Temp. Synth. 32, 150–156 (2023). https://doi.org/10.3103/S1061386223020036

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