Development of Ni-Base Superalloy with Operating Temperature up to 800°C for Gas Turbine Disks
- Authors: Bakradze M.M.1, Ovsepyan S.V.1, Buiakina A.A.1, Lomberg B.S.1
-
Affiliations:
- All-Russian Scientific Research Institute of Aviation Materials (VIAM)
- Issue: Vol 9, No 6 (2018)
- Pages: 1044-1050
- Section: Metal Sciences. Metallurgy
- URL: https://journals.rcsi.science/2075-1133/article/view/207713
- DOI: https://doi.org/10.1134/S2075113318060035
- ID: 207713
Cite item
Abstract
Abstract—The results of development of new nickel-base superalloy having an operating temperature up to 800°C for gas turbine disks have been presented. Structures, mechanical properties, and phase transformations of six experimental compositions have been researched. Physical and chemical modeling has been used to make a right choice of an alloy; with parameters as composition equivalents (they were based on equations of nonpolarizing ionic radii). The highest level of strength, ductility, toughness, and heat resistance was exhibited at 750°C by the Ni–Co–Cr–W–Mo–Ta–Al–Ti–Nb experimental composition with the total of aluminum, titanium, and niobium equal to 10 wt % and containing 4 wt % of tantalum.
About the authors
M. M. Bakradze
All-Russian Scientific Research Institute of Aviation Materials (VIAM)
Author for correspondence.
Email: admin@viam.ru
Russian Federation, Moscow, 105005
S. V. Ovsepyan
All-Russian Scientific Research Institute of Aviation Materials (VIAM)
Email: admin@viam.ru
Russian Federation, Moscow, 105005
A. A. Buiakina
All-Russian Scientific Research Institute of Aviation Materials (VIAM)
Email: admin@viam.ru
Russian Federation, Moscow, 105005
B. S. Lomberg
All-Russian Scientific Research Institute of Aviation Materials (VIAM)
Email: admin@viam.ru
Russian Federation, Moscow, 105005