Automatic Welding, 2020, №08



2020 №08 (08)

DOI of Article 10.37434/as2020.08.01

2020 №08 (02)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #8, 2020, pp. 9-15

Influence of introduction of refractory particles to welding pool on structure and properties of weld metal

V.V. Golovko, D.Yu. Yermolenko, S.M. Stepanyuk, V.V. Zhukov, V.А. Kostin

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

The performed investigations of influence of changes of sizes of primary dendrites in the structure of weld metal on their secondary microstructure and mechanical properties were performed. It is shown that an increase in the width of dendrites is accompanied by an increase in the temperature of the beginning of bainite transformation, but the content of low-temperature bainite in the microstructure of welds increases. The possibility of effect of inoculation to welding pool with dispersed particles of refractory compounds on relationship between the content in the microstructure of welds of components with coarse-acicular and fine-acicular morphology and, accordingly, on mechanical properties of welds. 9 Ref., 4 Tabl., 10 Fig.
Keywords: welds, microstructure, dendrites, bainite transformation, inoculation, refractory compounds, mechanical properties

Received: 30.04.2020

References

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