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

Authors
  • Ospennikova, O. G.1
  • Min, P. G.1
  • Rogalev, A. M.1
  • Vadeev, V. E.1
  • 1 All-Russian Scientific Research Institute of Aviation Materials (VIAM), Moscow, 105005, Russia , Moscow (Russia)
Type
Published Article
Journal
Inorganic Materials: Applied Research
Publisher
Pleiades Publishing
Publication Date
Nov 01, 2021
Volume
12
Issue
6
Pages
1534–1539
Identifiers
DOI: 10.1134/S2075113321060150
Source
Springer Nature
Keywords
Disciplines
  • Metal Sciences. Metallurgy
License
Yellow

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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