Automatic Welding, 2023, №03



2023 №03 (06)

DOI of Article 10.37434/as2023.03.01

2023 №03 (02)

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Avtomaticheskaya Svarka (Automatic Welding), #3, 2023, pp. 5-9

Influence of the nature of distribution of non-metallic inclusions on the mechanical properties of weld metal of low-alloy steels

V.V. Holovko¹, O.O. Shtofel¹, D.Yu. Korolenko²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute». 37 Peremohy Ave., 03056, Kyiv, Ukraine

A complex of works was carried out on establishing the nature of distribution of non-metallic inclusions in the structure of metal of low-alloy welds. As a result of metallographic examinations, the values of the volume content of inclusions in the structure and their distribution by sizes were established. The rationality of using such an additional indicator as the distribution density for a more informative description of non-metallic inclusions when evaluating their influence on the mechanical properties of weld metal was shown. The use of fractal analysis to reveal the features of the distribution density of non-metallic inclusions in the weld metal was proposed. 6 Ref., 4 Fig.
Keywords: welds, microstructure, non-metallic inclusions, distribution density, tendency to brittle fracture, fractal analysis


Received: 06.03.2023

References

1. Liu, S., Olson, D.L. (1987) The influence of inclusion chemical composition on weld metal microstructure. Journal of Materials Engineering, 9, 237-251. https://doi.org/10.1007/BF02834144
2. Lienert, T.J., Babu, S.S., Siewert, T.A. (2011) Solid-State Transformations in Weldments. In the ASM Handbook®. Welding Fundamentals and Processes, V.L. Acoff (ed.), 6A, ASM International®, Materials Park, 133-135. https://doi.org/10.31399/asm.hb.v06a.a0005613
3. Bhadeshia, H.K.D.H., Honeycombe, R.W.K. (2006) Steels: Microstructure and Properties. 3rd edition: Elsevier Ltd. https://doi.org/10.1016/B978-075068084-4/50016-9
4. Kang, Y. et al. (2014) Influence of Ti on nonmetallic inclusion formation and acicular ferrite nucleation in high strength low alloy steel weld metals. Metals and Materials International, 20(1), 119-127. https://doi.org/10.1007/s12540-014-1013-1
5. Holovko, V.V., Yermolenko, D.Yu., Stepanyuk, S.M. et al. (2020) Influence of introduction of refractory particles into welding pool on structure and properties of weld metal. The Paton Welding J., 8, 1-7. https://doi.org/10.37434/tpwj2020.08.01
6. Shtofel, O., Korolenko, D., Holovko, V. (2023) Computerization of calculation process of nonmetallic inclusion parameters in metal. In: Proc. of the VII Int. Sci. and Pract. Conf. Stockholm, Sweden, 423-434. https://doi.org/10.46299/ISG.2023.1.7

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