Image-Based FEM Modeling of the Stress State in Hypereutectic  High-Chromium Cast Irons

V.Yu. Perezhogin; A.V. Panichkin; R.G. Małgorzata; S.S. Abyl

doi:10.31643/2028/6445.33

Authors

V.Yu. Perezhogin Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University
A.V. Panichkin Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University
R.G. Małgorzata Wroclaw University of Science and Technology
S.S. Abyl Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University

DOI:

https://doi.org/10.31643/2028/6445.33

Keywords:

hypereutectic high-chromium cast iron, image-based FEM, thermal stresses, M7C3 carbides, microstructure analysis, finite element modeling.

Abstract

We developed an approach to analyze local thermal stresses in hypereutectic high-chromium cast irons using image-based finite element modeling (FEM) based on real metallographic images. Model preparation included Otsu thresholding of the microstructure, filtering noise objects, and directly assigning the spatial phase distribution from the binarized image without intermediate geometry construction in computer-aided design (CAD) systems. To verify the proposed approach, Drawing Exchange Format (DXF)-based and image-based FEM models constructed from the same microstructural data were compared, and the influence of finite element size on the calculated stress state was investigated. The results showed that, with a progressive reduction in finite element size, the image-based simulation results approached those obtained using the DXF-based models despite the discrete pixel-based representation of the phase boundaries. The image-based approach reproduces the main features of the local stress distributions obtained using the DXF-based models while eliminating the need for image vectorization and intermediate CAD/DXF geometry construction, thereby substantially simplifying the preparation of computational models of real microstructures. The obtained results confirm the applicability of image-based FEM for comparative analysis of local thermal stress distributions in complex multiphase microstructures of high-chromium cast irons.

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Author Biographies

V.Yu. Perezhogin, Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University

PhD, Researcher, Materials Science Laboratory, Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University, 050010, Shevchenko str., 29/133, Almaty, Kazakhstan. ORCID ID: https://orcid.org/0009-0006-7881-4786

A.V. Panichkin , Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University

Candidate of Technical Sciences, Leading Researcher at the Materials Science Laboratory, Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University, 050010, Shevchenko str., 29/133, Almaty, Kazakhstan. ORCID ID: https://orcid.org/0000-0002-2403-8949

R.G. Małgorzata, Wroclaw University of Science and Technology

PhD, Habilitated Doctor of Engineering, Department of Mechanics, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland. ORCID ID: https://orcid.org/0000-0003-2712-5914

S.S. Abyl, Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University

Doctoral student, Junior Researcher, Materials Science Laboratory, Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University, 050010, Shevchenko str., 29/133, Almaty, Kazakhstan. ORCID ID: https://orcid.org/0009-0006-1904-3483

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