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Structure and Characteristics of EP648 and VZh159 Alloys Synthesized by Selective Laser Melting after Simulated Annealing

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Inorganic Materials: Applied Research Aims and scope

Abstract

The structure and characteristics of EP648 and VZh159 heat-resistant alloys synthesized by selective laser melting after HIP, aging, and simulated annealing for 500 h are compared. The disbalance of alloying of EP648 and VZh159 alloys is calculated. It is shown that a decrease in strength characteristics, an increase in ductility, and a decrease in the period between simulated annealing and fracture of EP648 alloy is related to a decrease in the volume fraction of the particles of the σ phase caused by precipitation of α-Cr particles. It is determined that the synthesized VZh159 alloy after simulated annealing is far superior to the EP648 alloy according to the set of mechanical characteristics owing to more balanced alloying.

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ACKNOWLEDGMENTS

We are grateful to E.V. Filonova, P.N. Medvedev, and A.N. Raevskikh for their great contribution to the studies and preparation of the manuscript.

The research was performed within the research direction 10.4 of “Strategic development of materials and technologies of their recycling until 2030” [9].

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Authors and Affiliations

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

    E. N. Kablov, A. G. Evgenov, I. S. Mazalov, S. V. Shurtakov, D. V. Zaitsev & S. M. Prager

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  1. E. N. Kablov
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  2. A. G. Evgenov
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  3. I. S. Mazalov
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  4. S. V. Shurtakov
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  5. D. V. Zaitsev
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  6. S. M. Prager
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Correspondence to A. G. Evgenov.

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Translated by A. Muravev

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Kablov, E.N., Evgenov, A.G., Mazalov, I.S. et al. Structure and Characteristics of EP648 and VZh159 Alloys Synthesized by Selective Laser Melting after Simulated Annealing. Inorg. Mater. Appl. Res. 12, 117–124 (2021). https://doi.org/10.1134/S2075113321010123

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