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2019 №06 (10) DOI of Article
2019 №06 (12)

The Paton Welding Journal 2019 #06
TPWJ, 2019, #6, 54-58 pages

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       #6, 2019 (June)
Pages                      54-58

Investigation of conditions of deep penetration in manufacture of samples of heat-resistant alloy Inconel 718 by the method of selective laser melting

S.V. Adzhamsky1 and A.A. Kononenko2
1O. Gonchar Dnipro National University 72 Gagarin Ave., 49000, Dnipro, Ukraine E-mail: pk_dnu@i.ua
2LLC «Additive Laser Technology of Ukraine» 144 Rybinskaya Str., 49000, Dnipro, Ukraine. E-mail: info@alt-print.com
3Z.I. Nekrasov Iron & Steel Institute of the NAS of Ukraine 1 Academician Starodubov Square, 49000, Dnipro, Ukraine.E-mail: office.isi@nas.gov.ua

The relationship was established between the parameters of selective laser melting process (laser power and distance between tracks) and microstructure of samples of alloy Inconel 718 at the condition of applying a small diameter beam (0.05 mm). Using the method of selective laser melting, the samples of alloy Inconel 718 were manufactured in the installation ALT Alfa-150 of the LLC «Additive Laser Technology of Ukraine» production. For the first series of samples the alternating laser power was preset in the range of 150–250 W, and for the second series the distance was changed between tracks in the interval of 0.09–0.13 mm. Examination of microstructure was made in optical microscope AXIOVERT 200M MAT. The problems of effect of parameters of selective laser melting process (laser power, distance between tracks) on structure of Inconel 718 material were considered. From the results of work the relationships between the parameters of selective laser melting process and depth and width of the melt pool were determined. The conditions of a deep penetration with a formation of large pores were determined. 20 Ref., 1 Table, 6 Figures.
Keywords: additive technologies, selective laser melting, powder materials, heat-resistant nickel alloys, Inconel 718, melt pool, conditions of deep penetration

Received:                26.04.19
Published:               20.06.19


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