Automatic Welding, 2022, №12



2022 №12 (01)

DOI of Article 10.37434/as2022.12.02

2022 №12 (03)

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Avtomaticheskaya Svarka (Automatic Welding), #12, 2022, pp. 9-19

Features of welding high-strength alloys based on aluminium and beryllium using highly-concentrated heat sources (Review)

S.I. Peleshenko³, V.Yu. Khaskin¹, V.M. Korzhyk², V.V. Kvasnitskyi³, A.A. Grinyuk³, I.M. Klochkov², D. Chunling¹, A.O. Alyoshin²

¹China-Ukraine Institute of Welding, Guangdong Academy of Sciences, Guangdong Provincial Key Laboratory of Advanced Welding Technology. 510650, Guangzhou, China. E-mail: patonjournal@gwi.gd.cn
²E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
³NTUU «Igor Sikorskyi Kyiv Polytechnic Institute». 37 Peremohi Ave., 03056, Kyiv. E-mail: vn.paschenko@ukr.net

Results of welding a wide range of light alloys by highly-concentrated heat sources have been analyzed. It is shown that the characteristic defects are hot cracks, internal pores, HAZ softening, weld sagging, undercuts and irregular reinforcement bead formation. It was found that in order to produce sound joints, it is necessary to thoroughly select welding mode parameters, remove the oxide film from billet edges before welding, ensure reliable protection of the weld pool, and in some cases and it is rational to apply preheating or concurrent heating. One of the advanced methods to minimize the susceptibility to formation of the above-mentioned defects is application of hybrid laser-arc and laser-plasma welding processes. The welds produced by electron beam and laser (СО2- and fiber-optic lasers) welding processes are quite similar visually, by their macrostructure, as well as the main characteristics. The weld strength parameters and heat input required for full penetration of the metal are somewhat different for different welding methods (for fiberoptic laser it is usually 30 % less). 54 Ref., 3 Tabl., 8 Fig.
Keywords: welding, laser, electron beam, laser-arc, laser-plasma, light alloys, aluminium, beryllium, defects, mode parameters, mechanical properties


Received: 02.10.2022

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