Mathematical forecasting composition of secondary carbides in the single-crystal superalloys

• Autorzy: Glotka O.A. , Olshanetskii V.I.

Identyfikatory

DOI

10.5604/01.3001.0015.5563

• Języki publikacji: EN

Abstrakty

EN

Purpose: Predicting the specifics of the distribution of alloying elements between secondary carbides, their topology, and morphology, as well as the composition for a single-crystal multicomponent system of the type Ni-11.5Cr-5Co-3.6Al-4.5Ti-7W-0.8Mo-0.06C using the calculated CALPHAD (passive experiment) versus scanning electron microscopy (active experiment). Design/methodology/approach: This work presents the results of studies of the distribution of chemical elements in the composition of carbides, depending on their content in the system. The studies were carried out using an electron microscope with computer analysis of images and chemical composition. Findings: It was found that the influence of alloying elements on the composition of carbides is complex and is described by complex dependencies that correlate well with the obtained experimental results. Research limitations/implications: An essential problem is the prediction of the structure and properties of superalloys without or with a minimum number of experiments. Practical implications: The obtained dependencies can be used both for designing new superalloys and for improving the compositions of industrial alloys. Originality/value: The value of this work is that the obtained dependences of the influence of alloying elements on the dissolution (precipitation) temperatures and the distribution of elements in secondary carbides in the superalloy of the Ni-11.5Cr-5Co-3.6Al-4.5Ti-7W- 0.8Mo-0.06C system. It was found that changes in the course of the curves of temperature dependence on the element content closely correlate with thermodynamic processes occurring in the system, that is, the curves exhibit extrema accompanying the change in the stoichiometry of carbides or the precipitation of new phases.

Słowa kluczowe

EN

single-crystal nickel-based superalloy; alloying system; CALPHAD method; structure; composition of secondary carbides

PL

krystaliczny nadstop na bazie niklu; układ stopowy; metoda CALPHAD; struktura; skład węglików wtórnych

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2021
• Tom: Vol. 111, nr 1
• Strony: 34--41
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Glotka O.A.

• Zaporizhzhia Polytechnic National University, 64 Zhukovskogo str., 69063, Zaporizhzhia, Ukraine

• https://orcid.org/0000-0002-3117-2687

autor

Olshanetskii V.I.

• Zaporizhzhia Polytechnic National University, 64 Zhukovskogo str., 69063, Zaporizhzhia, Ukraine

• https://orcid.org/0000-0002-9485-4896

Bibliografia

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