Microstructure and microhardness of nickel-base heat-resistant alloys obtained by directional and equilibrium crystallization

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dc.citation.epage38
dc.citation.issueVolume 5, number 3/4
dc.citation.spage33
dc.contributor.authorTrostianchyn Andriy
dc.contributor.authorShvachko Serhii
dc.contributor.authorKulyk Volodymyr
dc.contributor.authorPleshakov Eduard
dc.contributor.authorMolkov Yuriy
dc.contributor.authorLenkovskiy Taras
dc.date.accessioned2022-11-21T11:19:06Z
dc.date.available2022-11-21T11:19:06Z
dc.date.issued2019
dc.description.abstractIn order to determine the safe operational life of the components of gas turbine engines (GTE), introductory tests of nickel-base heat-resistant alloys (NHRA) have been performed. X-ray fluorescence and X-ray diffraction analyzes, optical microscopy and Vickers hardness measurements provided data on the phase-structural state and mechanical properties of the pristine ZhS6K-VI and ZhS32-VI alloys obtained by equilibrium and high-speed directional crystallization, respectively. Almost complete compliance of the investigated materials with the certified alloys in chemical and phase composition has been found. A significant difference in the parameters of the fragments of the microstructure of the investigated alloys, which is naturally consistent with the conditions of equilibrium and high-speed directional crystallizations, was revealed. A slightly lower anisotropy of microhardness (2.8 %), measured in transverse and longitudinal sections, was found in the ZhS6K-VI alloy as compared to the anisotropy (5.1 %) in the ZhS32-VI alloy. The obtained results will be used to test a nondestructive method for determining the safe operational life of gas turbine engine components.
dc.identifier.citationMicrostructure and microhardness of nickel-base heat-resistant alloys obtained by directional and equilibrium crystallization / Andriy Trostianchyn, Serhii Shvachko, Volodymyr Kulyk, Eduard Pleshakov, Yuriy Molkov, Taras Lenkovskiy // Ukrainian Journal of Mechanical Engineering and Materials Science. – Lviv : Lviv Politechnic Publishing House, 2019. – Volume 5, № 3/4. – P. 33–38. – Bibliography: 17 titles.
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/57183
dc.language.isoen
dc.publisherLviv Politechnic Publishing House
dc.subjectheat-resistant alloys, nickel-base superalloys, directional crystallization, equilibrium crystallization, gas turbine, blade, microstructure, microhardness
dc.titleMicrostructure and microhardness of nickel-base heat-resistant alloys obtained by directional and equilibrium crystallization
dc.typeArticle

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Ukrainian Journal of Mechanical Engineering and Materials Science. – 2019. – Vol. 5, No. 3/4