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Evolution of the Structure and Properties of High-Chromium Heat-Resistant VZh159 Alloy Prepared by Selective Laser Melting: Part I

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Inorganic Materials: Applied Research Aims and scope

Abstract

The evolution of the structural-phase state of the VZh159 alloy fabricated by selective laser melting after various types of thermal exposure and hot isostatic pressing (HIP) is studied. The effect of a long 500-h exposure at temperatures of 800 and 900°C on the phase composition and morphology of structural components is determined. The short-term and long-term strength of the material in various conditions are studied. It is shown that the segregation of dispersed particles of the σ phase after the gas-static treatment followed by aging and after prolonged exposure at high temperatures does not have a significant negative effect on the plastic and strength characteristics of the alloy. The long-term strength of the synthesized metal after the 500-h exposure at a temperature of 900°C corresponds to the certified values ​​for the deformed semifinished product of the VZh159 alloy.

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Authors and Affiliations

  1. All-Russian Scientific Research Institute of Aviation Materials, 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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Correspondence to A. G. Evgenov.

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Translated by L. Mosina

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Kablov, E.N., Evgenov, A.G., Mazalov, I.S. et al. Evolution of the Structure and Properties of High-Chromium Heat-Resistant VZh159 Alloy Prepared by Selective Laser Melting: Part I. Inorg. Mater. Appl. Res. 11, 7–16 (2020). https://doi.org/10.1134/S2075113320010153

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