2021 №12 (02) DOI of Article
2021 №12 (04)

The Paton Welding Journal 2021 #12
The Paton Welding Journal, 2021, #12, 18-23 pages

Calculated-experimental model of distribution of non-metallic inclusions in the metal of welds by sizes

L.A. Taraborkin, V.V. Holovko

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail:

There is a large number of investigations on the impact of distribution of non-metallic inclusions in the weld metal on its structure and mechanical properties. However, the authors of these works do not describe the kinetics of forming such a distribution. The results of the development of a distribution model in the weld metal of non-metallic inclusions by sizes are presented. Formation of the calculation part of the model is based on the processing of experimental data on the sizes of non-metallic inclusions in the metal of welds, deposited by the methods of submerged arc welding and in shielding gas. Generalization and analysis of experimental data showed that the final distribution of inclusions in the metal of the studied welds is submitted to the law of gamma-distribution (probability is > 95 %). To describe the evolution of the distribution of non-metallic inclusions during weld formation, the authors proposed to apply a probabilistic model in the form of gamma-distribution with time-dependent parameters.
Keywords: low-alloy steel, welding, weld metal, non-metallic inclusions, distribution

Received 12.10.2021
Accepted: 24.12.2021


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