Studying microstructure of heat-resistant alloy based on the Fe-Cr-Ni-aUoymg element system for manufacture of components for metallurgical equipment
Kvon S.S. Kulikov V.Yu. Arinova S.K. Shcherbakova E.P.
2023Ore and Metals Publishing house
CIS Iron and Steel Review
2023#2584 - 89 pp.
The paper presents the results of studying the microstructure and phase composition of an experimental heat-resistant alloy based on the Fe-Cr-Ni-alloying element system intended for manufacturing of components for metallurgical equipment. Samples of an experimental alloy were prepared for research. Electron microscopy using X-ray mapping was used as a research method. X-ray phase analysis was performed to verify the phase identification. Influence of alloying elements on formation of intermetallic strengthening phases in an experimental alloy is considered. It is shown that the alloy matrix is represented by a γ-solution by the type of substitution and interstitial phases of Ni3Al, MeC. The existence of a new intermetallic phase Me2B, identified taking into account the chemical composition of the alloy, as (Nb, Mo)2B, has been identified and experimentally proved. This phase is represented by significantly smaller inclusions. Microstructural and X-ray spectral analysis of the samples confirmed the presence of the above phases. It has been shown that the presence of this phase in the structure has a positive effect on the value of longterm strength. Furnace roller tables were cast from smelted experimental steel in normal operation.
alloying , creep limit , fine structure , heat resistance , intermetallic phase , longterm strength , micro-X-ray spectral analysis , microstructure
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Karaganda Technical University, Karaganda, Kazakhstan
Karaganda Technical University
10 лет помогаем публиковать статьи Международный издатель
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