Structure–phase characteristics and the mechanical properties of single-crystal nickel-based rhenium-containing superalloys with carbide–intermetallic hardening
- Authors: Petrushin N.V.1, Visik E.M.1, Gorbovets M.A.1, Nazarkin R.M.1
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Affiliations:
- All-Russia Scientific Research Institute of Aviation Materials VIAM
- Issue: Vol 2016, No 7 (2016)
- Pages: 630-641
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170666
- DOI: https://doi.org/10.1134/S0036029516070119
- ID: 170666
Cite item
Abstract
Single crystals of rhenium-containing ZhS32-VI, ZhS32U nickel superalloys with the 〈001〉, 〈011〉, and 〈111〉 crystallographic orientations have been produced by directional solidification. The alloying element segregations and the thermal stability of the microstructure consisting of a γ solid solution and hardened by precipitates of the γ′ phase and MC carbides are studied. The crystal lattice parameters of the γ′ and γ phases; the γ/γ′ misfit; and the liquidus, solidus, and γ′-solvus temperatures of the alloys have been found. The temperature dependence of the γ′-phase solubility has beeisn determined. The temperature–orientation dependences of the tensile strength characteristics in the range 20–1150°C and the low-cycle fatigue at 850°C of the alloy single crystals with the 〈001〉, 〈011〉, and 〈111〉 orientations are presented.
About the authors
N. V. Petrushin
All-Russia Scientific Research Institute of Aviation Materials VIAM
Author for correspondence.
Email: admin@viam.ru
Russian Federation, ul. Radio 17, Moscow, 105005
E. M. Visik
All-Russia Scientific Research Institute of Aviation Materials VIAM
Email: admin@viam.ru
Russian Federation, ul. Radio 17, Moscow, 105005
M. A. Gorbovets
All-Russia Scientific Research Institute of Aviation Materials VIAM
Email: admin@viam.ru
Russian Federation, ul. Radio 17, Moscow, 105005
R. M. Nazarkin
All-Russia Scientific Research Institute of Aviation Materials VIAM
Email: admin@viam.ru
Russian Federation, ul. Radio 17, Moscow, 105005