2022 №02 (04) DOI of Article
2022 №02 (06)

Electrometallurgy Today 2022 #02
Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2022, #2, 33-38 pages

Metallurgical processes in the weld metal at electron beam welding of 01570 aluminium alloy

V.V. Skryabinskyi1, V.M. Nesterenkov1, M.O. Rusynyk1, A.V. Mykytchyk2

1E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., Kyiv, 03150, Ukraine. E-mail: office@paton.kiev.ua
2SC «International Center for Electron Beam Technologies of the E.O. Paton Electric Welding Institute of the NAS of Ukraine». 68 Antonovych str., 03150, Kyiv

Scandium and zirconium content was determined in different areas of welded joints of stamped semi-finished products of 01570 aluminium alloy produced by electron beam welding. It was found that dissolution of not only secondary, but also of part of primary Al3(Sc, Zr) intermetallics, contained in the base metal, takes place in the weld pool. The quantity of scandium dissolved in the liquid metal, is determined by the time of the pool existence. Further on, scandium is completely or partially fixed in the oversaturated solid solution, depending on the hardening rate during weld metal cooling. At 0.10…0.12 % concentration of scandium dissolved in the weld pool, its complete transition into an oversaturated solid solution ensures hardening at not less than 5∙102 ºС/s rate. It is shown that approximately 50 % scandium, contained in 01570 alloy, participates in hardening of the stamped semi-finished products. The remaining scandium is present in the composition of primary intermetallics. Ref. 11, Tabl. 4, Fig. 4. Key words: electron beam welding; aluminium alloy; hardening; artificial aging; intermetallics

Received 12.04.2022


1. Filatov, Yu.A. (2014) Alloys of Al-Mg-Sc system as the special group of wrought aluminium alloys. Tekhnologiya Lyogkikh Splavov, 2, 34-41 [in Russian].
2. Drits, M.E., Toropova, L.S., Anastasieva, G.K. et al. (1984) Influence of homogenizing heatings on properties of alloys of Al-Sc and Al-Mg-Sc systems. Izv. AN SSSR, Metally, 3, 196-201 [in Russian].
3. Skryabinskyi, V.V., Nesterenkov, V.M., Rusynyk, M.O., Strashko, V. (2020) Effect of mode of electron beam welding, heat treatment and plastic deformation on strength of joints of aluminium 1570 alloy. The Paton Welding J., 5, 10-15. https://doi.org/10.37434/tpwj2020.05.02
4. Nesterenkov, V.M., Skryabinskyi, V.V., Rusynyk, M.O. (2021) Effect of thermal cycles in electron beam welding of aluminium 1570 alloy on mechanical properties of welded joints. Ibid., 5, 40-45. https://doi.org/10.37434/tpwj2021.05.06
5. Berezina, A.L., Segida, E.A., Monastyrskaya, T.A., Kotko, A.V. (2008) Influence of crystallization rate on abnormal supersaturation of Al-Mg-Sc alloys. Metallofizika i Novejshie Tekhnologii, 30(6), 849-857 [in Russian].
6. Davydov, V.G., Elagin, V.I., Zakharov, V.V., Rostova, T.D. (1996) About of doping of aluminium alloys with scandium and zirconium additives. Metallovedenie i Termicheskaya Obrabotka Metallov, 8, 25-30 [in Russian]. https://doi.org/10.1007/BF01395323
7. Zakharov, V.V., Fisenko, I.A. (2013) On economy of scandium in its doping of aluminium alloys. Tekhnologiya Lyogkikh Splavov, 4, 52-60 [in Russian]. https://cyberleninka.ru/article/n/ob-ekonomii-skandiya-pri-legirovanii-im-alyuminievyh-splavov/viewer
8. Zhao, W.T., Yan, D.S., Li, X.Y. et al. (2006) Tensile property of Al-Mg-Sc-Zr alloy at cryogenic temperature. AIP Confere nce Proceedings, 824, 169-175. https://doi.org/10.1063/1.2192348
9. Filatov, Yu.A. (2013) Aluminium alloys of Al-Mg-Sc system for welded and brazed structures. Tekhnologiya Lyogkikh Splavov, 2, 36-42 [in Russian]. https://cyberleninka.ru/article/n/alyuminievye-splavy-sistemy-al-mg-sc-dlya-svarnyhi-payanyh-konstruktsiy/viewer
10. Elagin, V.I. (2004) History, successes and problems of doping of aluminium alloys with transition metals. Ibid., 3, 6-29 [in Russian].
11. Valuev, V.V. (1988) Microstructure of large-sized ingots of 01570 aluminium alloy. Metallovedenie i Termicheskaya Obrabotka Metallov, 6, 15-17 [in Russian].

Advertising in this issue: