2017 №01 (12) DOI of Article
2017 №01 (01)

The Paton Welding Journal 2017 #01
The Paton Welding Journal, 2017, #1, 10-13 pages

Computation and experimental evaluation of formation of primary structure in weld metal with refractory inoculants

D.Yu. Ermolenko and V.V. Golovko

E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail:
Possibility of regulation of structure and properties of weld metal of high-strength low-alloy steels was considered. It can be done with the help of introduction in a weld pool of the disperse refractory inoculants as surface-active elements. A procedure was described for performance of the experiments on introduction of the different refractory inoculants (TiC, TiN, SiC, TiO2, Al2O3, Zr2O, MgO) in the weld pool in high-strength low-alloy steel welding. The results of investigation of effect of the introduced inoculants on primary structure parameters and main mechanical properties of investigated weld metal are given. A model of interaction of refractory inoculants with solidification front was briefly discussed. Parameters of primary weld metal structure with the refractory inoculants, which were received by means of experimental investigations and computation experiment, were compared. The results of this comparison showed adequacy of a proposed model of interaction of refractory inoculant with solidification front. 9 Ref., 2 Tables, 7 Figures.
Keywords: arc welding, high-strength low-alloy steels, dendrite structure, primary structure, disperse refractory inoculants, solidification
Received:                19.10.16
Published:               16.02.17
1. Golovko, V.V., Stepanyuk, S.N., Ermolenko, D.Yu. (2015) Effect of titanium-containing inoculants on structure and properties of weld metal of high-strength low-alloy steels. The Paton Welding J., 2, 14–18.
2. Golovko, V.V., Stepanyuk, S.N., Ermolenko, D.Yu. (2014) Technology of welding of high-strength low-alloy steels with introduction of titanium-containing inoculants. In: Collect. Monography: Nanosized systems and nanomaterials: Investigations in Ukraine. Ed. by A.G. Naumovets. Kiev: Akademperiodika.
3. Vanovsek, W., Bernhard, C., Fiedler, M. et al. (2013) Influence of aluminum content on the characterization of microstructure and inclusions in high-strength steel welds. Welding in the World, 57(Issue 1), 73–83.
4. (2011) Effects of soluble Ti and Zr content and austenite grain size on microstructure of simulated heat affected zone in Fe–C–Mn–Si alloy. ISIJ Int., 51(9), 1542–1533.
5. Ermolenko, D.Yu., Ignatenko, A.V., Golovko, V.V. (2016) Direct numerical modelling of formation of weld metal dendrite structure with disperse refractory inoculants, 12, 13–20.
6. Galenko, P.K., Krivilev, M.D. (2000) Isothermal growth of crystals in overcooled binary alloys. Matematicheskoe Modelirovanie, 12(11), 17–37.
7. ISO 26304:2011: Welding consumables. Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels. Classification.
8. Panasyuk, A.D., Fomenko, V.S., Glebova, G.G. (1986) Resistance of non-metallic materials in melts. Kiev: Naukova Dumka.
9. GOST 6996–66: Welded joints. Methods of determination of mechanical properties.