The Paton Welding Journal, 2019, №09



2019 №09 (09)

DOI of Article 10.15407/tpwj2019.09.01

2019 №09 (02)

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The Paton Welding Journal, 2019, #9, 2-7 pages
 
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #9, 2019 (October)
Pages 2-7

Microstructure of VT20 titanium alloys produced by the method of layer-by-layer electron beam fusion using domestic powder materials

V.M. Nesterenkov¹, V.A. Matviichuk¹, M.O. Rusynik¹, T.B. Yanko² and A.E. Dmitrenko³

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²PJSC «Titanium Institute» 180 Soborny Prosp., 69035, 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 nonspherical powders of VT-20 titanium alloy were produced by the method of electron beam 3D fusion. Microstructure of deposited metal is pore-free, finely dispersed and uniform over the entire surface of the section. It is acicular a′-phase of titanium with a small content of b-phase. Sample microhardness is from HV 3960 to HV 4150 MPa. Uniform distribution of alloying elements and decreased content of aluminium due to its volatility in deposition was noted. Presence of insignificant porosity and increased roughness on part edges was detected. The methods of their elimination were obtained. 10 Ref., 1 Table, 11 Figures.
Keywords: additive technologies, titanium alloy, electron beam, surfacing, structure, microhardness

 
Received: 12.06.19
Published: 17.10.19
 
 

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