The Investigation of the Chemical Composition, Structure, and Mechanical Properties of EP648 Alloy at Different Stages of Additive Manufacturing
- Authors: Min P.G.1, Vadeev V.E.1, Rogalev A.M.1, Knyazev A.E.1
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Affiliations:
- All-Russian Scientific Research Institute of Aviation Materials
- Issue: Vol 10, No 4 (2019)
- Pages: 906-911
- Section: Article
- URL: https://journals.rcsi.science/2075-1133/article/view/208006
- DOI: https://doi.org/10.1134/S2075113319040257
- ID: 208006
Cite item
Abstract
The chemical composition of a nickel heat-resistant alloy of the EP648 brand at different stages of additive manufacturing, as well as the structure and mechanical properties of the synthesized material in comparison with a material obtained via a traditional deformation method, is investigated. It is shown that the application of additive technologies in the manufacture of EP648 nickel heat-resistant alloy leads to a significant increase in the concentration of gases (O and N) in the alloy, formation of a fine-grain structure, and increased porosity. Here, an increase in the strength properties and a decrease in the impact strength, low cycle fatigue, and plasticity are characteristic of such a material. The time to failure of the synthesized specimens in a creep rupture test exceeds that of sheet specimens but is inferior to that of deformed bars.
About the authors
P. G. Min
All-Russian Scientific Research Institute of Aviation Materials
Author for correspondence.
Email: viamlab3@mail.ru
Russian Federation, Moscow, 105005
V. E. Vadeev
All-Russian Scientific Research Institute of Aviation Materials
Email: viamlab3@mail.ru
Russian Federation, Moscow, 105005
A. M. Rogalev
All-Russian Scientific Research Institute of Aviation Materials
Email: viamlab3@mail.ru
Russian Federation, Moscow, 105005
A. E. Knyazev
All-Russian Scientific Research Institute of Aviation Materials
Email: viamlab3@mail.ru
Russian Federation, Moscow, 105005