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2019 №09 (09) DOI of Article
10.15407/as2019.09.01
2019 №09 (02)

Automatic Welding 2019 #09
Avtomaticheskaya Svarka (Automatic Welding), #9, 2019, pp. 7-13

Microstructure of VT20 titanium alloys produced by method of layer-by-layer electron beam fusion using domestic powder materials
V.M. Nesterenkov1, V.A. Matveychuk1, M.O. Rusynik1, T.B. Yanko2, A.E. Dmitrenko3
1E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
2PJCS «Titanium Institute». 180 Soborny Ave., 69035, Zhaporozhye, Ukraine. E-mail: titanlab3@ukr.net
3NSC «Kharkov Institute of Physics and Technology». 1 Akademicheskaya Str., 61108, Kharkov, Ukraine. E-mail: dmitrenko@kipt.kharkov.ua

Samples of products of domestic non-spherical powders of VT-20 titanium alloy were obtained by method of electron beam 3D-deposition. Microstructure of deposited metal is a porous-free, fine-dispersed and uniform along the whole surface of section. It is acicular titanium α’-phase with small content of β-phase. Sample microhardness is from HV 3960 to 4150 MPa. Uniform distribution of alloying elements and decreased content of aluminum due to its volatility in deposition was noted. Presence of insignificant porosity and increased roughness on part edges was determined. The methods of their elimination were outlined. Ref. 10, Tabl. 1, Fig. 11.
Keywords: additive technologies, titanium alloy, electron beam, deposition, structure, microhardness

Received: 12.06.2019

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