Automatic Welding, 2024, №05



2024 №05 (06)

DOI of Article 10.37434/as2024.05.07

2024 №05 (08)

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Avtomaticheskaya Svarka (Automatic Welding), #5, 2024, pp. 55-59

Diffusion welding of magnesium alloy MA2-1 through the intermediate layer of titanium or nickel

Iu.V. Falchenko, L.V. Petrushynets, V.E. Fedorchuk, V.A. Kostin, O.L. Puzrin

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

Vacuum diffusion welding of magnesium alloy MA2-1 is considered in the paper. It was found that welding of the magnesium alloy without using intermediate layers does not ensure formation of high-quality joints. Separate flat pores, elongated along the joint line, are observed in the joint, causing low mechanical properties of the joints. Using intermediate layers made of low-alloy nickel or titanium alloys and forming matrices during welding, which increase plastic deformation on the contact surfaces of the samples during the thermal-deformation welding cycle, allows producing joints without defects. Metallographic studies show significant plastic deformation of the intermediate layer (Ni or Ti), which is a harder material compared to the magnesium alloy. The mechanical properties and microhardness of the welded joints were determined. 13 Ref., 2 Tabl., 4 Fig.
Keywords: vacuum diffusion welding, magnesium alloy, intermediate layer, microstructure, mechanical testing


Received: 16.07.2024
Received in revised form: 03.09.2024
Accepted: 14.10.2024

References

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