| 2026 №03 (05) | 2026 №03 (01) |
The Paton Welding Journal, 2026, #3, 45-50 pages
Possibilities of fractal analysis methods for welded metal microstructure metallographic research (Review)
V.V. Holovko1, O.O. Shtofel1,2
1E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. Е-mail: vicholow@gmail.com2National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” 37 Prosp. Beresteiskyi, 03056, Kyiv, Ukraine
Abstract
The metal of welded joints, which is characterized by increased stochasticity of structural components, requires taking into account a certain number of indicators when analyzing in the “composition–structure–properties” system. Such analysis complexity is associated with both the modern metallographic analysis methods imperfection and the difference in measurement units. The non-metallic inclusions content in the metal is determined in percent, the intergrain boundaries branching — in micrometers, the grains orientation — in degrees. It is shown that when performing metallographic research based on fractal parameterization methods of analysis of low alloyed steels weld metal structure, it is possible to obtain measurement results in numerical form, which should be the basis for creating programs for describing the interaction in the “structure–properties” system.
Keywords: welding, metallurgy, metal structure, fractal analysis, microstructure, non-metallic inclusions, grain boundaries
Received: 29.12.2025
Received in revised form: 05.02.2026
Accepted: 18.03.2026
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