2019 №01 (04) DOI of Article
2019 №01 (06)

The Paton Welding Journal 2019 #01
TPWJ, 2019, #1, 25-27 pages
Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       #1, 2019 (February)
Pages                      25-27

Influence of magnetic field on crystallization of welds in arc welding

A.D. Razmyshlyaev1 and M.V. Ageeva2
1State Higher Education Institute Priazovsky State Technical University 7 Universitetskaya Str., 876500, Mariupol, Ukraine.E-mail: razmyshljaev@gmail.com
2Donbass State Machine Building Academy 72 Akademicheskaya Str., 84313, Kramatorsk, Ukraine. E-mail:maryna_ah@ukr.net

A review of publications on metallurgical and casting industry showed that when analyzing the properties of liquid metals and alloys, many authors proceed from the concepts of their cluster structure. Cluster structure of liquid is a hypothesis, but it is confirmed by studies of diffraction of X-rays, electrons and neutrons, reflected from its surface. The work considers the existing concepts of a cluster being a crystal-like concentration of atoms. Around the clusters a softening zone exists, which consists of disordered atoms. Its volume does not exceed 3–5 % and this provides the fluidity of many melts. The authors of publications have succeeded in explaining the forming structure of ingots, based on the cluster mechanism of the process of crystallization of liquid metals and alloys. The authors of this work suggested that the overheated liquid metal in the head part of the pool, which has smaller clusters, moves under the action of magnetic fields to its tail part, and provides a refinement of the primary structure of the weld metal. 20 Ref., 1 Figure.
Keywords: welding, weld pool, magnetic field, cluster, weld structure, crystallization
Received:                23.10.18
Published:               13.02.19
1. Chernysh, V.P., Kuznetsov, V.D., Briskman, A.N. et al. (1983) Welding with electromagnetic stirring. Kiev, Tekhnika [in Russian].
2. Razmyshlyaev, A.D., Ahieieva, M.V. (2014) Features of arc surfacing process in a longitudinal magnetic field. Appl. Mech. Mater., 682, 313–318. https://doi.org/10.4028/www.scientific.net/AMM.682.313
3. Razmyshlyaev, A.D., Vydmysh, P.A., Ageeva, M.V. (2017) Automatic submerged-arc welding under action of external magnetic field. Mariupol, PGTU [in Russian].
4. Razmyshlyaev, A.D., Ageeva, M.V. (2018) On mechanism of weld metal structure refinement in arc welding under action of magnetic fields (Review). The Paton Welding J., 3, 25–28. https://doi.org/10.15407/tpwj2018.03.05
5. Chalmers, B. (1968) Theory of solidification. Moscow, Metallurgiya [in Russian].
6. Flemings, M. (1977) Processes of solidification. Moscow, Mir [in Russian].
7. Bagryansky, K.V., Dobrotina, Z.A., Khrenov, K.K. (1976) Theory of welding processes. Kiev, Vyshcha Shkola [in Russian].
8. Frolov, V.V. (1988) Theory of welding processes. Moscow, Vysshaya Shkola [in Russian].
9. Gavrilin, I.V. (2000) Melting and crystallization of metals and alloys. Vladimir, Vladimir. Un-t [in Russian].
10. Tolochko, N.K., Andrushevich, A.A. (2013) Cluster structure of melts. Litio i Metallurgiya, 73(4), 59–63 [in Russian].
11. Zhukova, L.A. (2002) Structure of metallic liquids: Manual. Ekaterinburg, UGTU-UPI [in Russian].
12. Skrebtsov, A.M., Ivanov, G.A., Sekachev, A.O. et al. (2006) New method for determination of number of atoms in metal melt cluster. Visnyk Pryazov. DTU: Transact., 16, 1–7.
13. Skrebtsov, A.M. Structure of liquid metals in liquidus-boiling temperature range. Protsessy Litiya, 3, 3–7 [in Russian].
14. Najdek, V.L., Melnik, S.G. (2015) Clusters — the structural constituents of metal melts. Metall i Litio Ukrainy, 266(7), 21–33 [in Russian].
15. Aganaev, Yu.P. (2014) Formation of structure of metal alloys under conditions of energy inhomogeneity of phase interface in periodic crystallization. Sovrem. Naukoyomkie Tekhnologii, 9, 6–10 [in Russian].
16. Stetsenko, V.Yu. (2015) Clusters in liquid metals — stable nanocrystals. Litio i Metallurgiya, 79(2), 33–35 [in Russian].
17. Marukovich, E.I., Stetsenko, V.Yu. (2015) Main difficulties of modern theory of metal melt. Ways to overcome. Litio i Metallurgiya, 84(3), 24–27 [in Russian].
18. Ivanov, I.A. (2007) Kinetic phase transition in crystallization of metals from melt: Syn. of Thesis for Cand. of Phys.-Math. Sci. Degree. Moscow [in Russian].
19. Deev, V.B., Tsetsorina, S.A., Selyanin, I.F., Prikhodko, O.G. (2003) Some peculiarities of cluster model of metal melts. Polzunovsky Almanakh, 3, 141–149 [in Russian].
20. Frumin, I.I. (1961) Automatic electric arc surfacing. Kharkov, Lit-ra po Chyornoj i Tsvetnoj Metallurgii [in Russian].