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Studying Chemical Composition, Structure, and Mechanical Properties EP648 Alloy Fabricated by Deformation, Lost Wax Casting, and Selective Laser Sintering

  • METAL SCIENCES. METALLURGY
  • Published:
Inorganic Materials: Applied Research Aims and scope

Abstract

This article analyzes the chemical composition, structure, and mechanical properties of heat resistant nickel alloy, grade EP648, fabricated by various methods: deformation, lost wax casting, and selective laser sintering. It has been demonstrated that the deformed material is characterized by low porosity and higher impact toughness and plasticity; the cast material is characterized by coarser grains and a high level of long term strength and low cycle fatigue; and the material fabricated by selective laser sintering is characterized by a higher content of oxygen and nitrogen and a fine-grained structure with extremely intense grain irregularity and inheritance, as well as higher short term strength.

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ACKNOWLEDGMENTS

We are grateful to A.N. Raevskikh and Yu.V. Artemenko for analysis of microstructure and to M.A. Lapteva for performance of quantitative metallographic analysis.

Funding

This work was carried out within the framework of the Strategic Directions for the Development of Materials and Technologies for Their Processing up to the Year 2030 (Section 10, Energy-Efficient, Resource-Saving, and Additive Technologies of Fabrication of Parts, Semifinished Products, and Structures) [25].

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Authors and Affiliations

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

    O. G. Ospennikova, P. G. Min, A. M. Rogalev & V. E. Vadeev

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  1. O. G. Ospennikova
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  2. P. G. Min
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  3. A. M. Rogalev
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  4. V. E. Vadeev
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Correspondence to P. G. Min.

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Translated by I. Moshkin

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Ospennikova, O.G., Min, P.G., Rogalev, A.M. et al. Studying Chemical Composition, Structure, and Mechanical Properties EP648 Alloy Fabricated by Deformation, Lost Wax Casting, and Selective Laser Sintering. Inorg. Mater. Appl. Res. 12, 1534–1539 (2021). https://doi.org/10.1134/S2075113321060150

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