Obrabotka Metallov 2020 Vol. 22 No. 2

OBRABOTKAMETALLOV Vol. 22 No. 2 2020 74 MATERIAL SCIENCE References 1. Debroy T., Wei H.L., Zuback J.S., Mukherjee T., Elmer J.W., Milewski J.O., Beese A.M., Wilson-Heid A., De A., Zhang W. Additive manufacturing of metallic components – Process, structure and properties. Materials Science and Engineering , 2018, vol. 92, pp. 112–224. – DOI: 10.1016/j.pmatsci.2017.10.001. 2. Tarasov S.Y., FilippovA.V., Shamarin N.N., Fortuna S.V., Maier G.G., Kolubaev E.A. Microstructural evolution and chemical corrosion of electron beam wire-feed additively manufactured AISI 304 stainless steel. Journal of Alloys and Compounds, 2019, vol. 803, pp. 364–370. DOI: 10.1016/j.jallcom.2019.06.246. 3. Li N., Huang S., Zhang G., Qin R., LiuW., Xiong H., Shi G., Blackburn J. Progress in additive manufacturing on new materials: a review. Journal of Materials Science & Technology, 2019, vol. 35 (2), pp. 242–269. DOI: 10.1016/j. jmst.2018.09.002. In fl uence of Electron Beam Additive Manufacturing Process Parameters on Structure and Properties of Austenitic Stainless Steel 321 Anna Zykova a, * , Sergey Nikonov b , Veronika Utyaganova c , Evgeny Kolubaev d Institute of Strength Physics and Materials Science of the Siberian Branch of the RAS, 2/4, pr. Akademicheskii, Tomsk, 634055, Russian Federation a https://orcid.org/0000-0001-8779-3784, zykovaap@mail.ru , b https://orcid.org/0000-0002-5588-4718, SergRFF@ngs.ru, c https://orcid.org/0000-0002-2303-8015, fi laret_2012@mail.ru , d https://orcid.org/0000-0001-7288-3656, eak@ispms.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2020 vol. 22 no. 2 pp. 63–75 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2020-22.2-63-75 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 09 March 2020 Revised: 02 April 2020 Accepted: 17 April 2020 Available online: 15 June 2020 Keywords : Additive technologies Electron beam Austenitic steel Electron beam current Cladding rate Wire feed speed Funding The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation, project No. III.23.2.11 ABSTRACT Introduction. In modern industrial and scienti fi c-technical sphere the problem of details formation from various metals and alloys by additive methods is one of the most critical and demanding timely decision. This is primarily due to the need to produce large, complex shaped parts with high productivity and as little waste as possible. One of the most applicable methods for the formation of products by additive method is electron beam wire-feed technology. With use of wire fi lament and an electron beam for melting in a printing zone it is possible to obtain details with high productivity and acceptable indicators of fi nal structure and mechanical properties. However, interrelation of received structure and mechanical properties depending on parameters of electron beam additive manufacturing process nowadays insuf fi ciently presented in the literature. In this regard, the purpose of this work is to analyze the in fl uence of additive electron-beam production process parameters on the formation of products from SS 321. Results and discussion. Electron beam current, linear printing speed, and wire feeding ratio are used as variable parameters, and the ultimate tensile strength is taken as the optimization parameter. Optimal parameters of the electron beam current (40 mA), printing speed (180 mm/min) and wire feeding ratio (1.3) at constant accelerating voltage (30 kV) are established. These parameters allow forming the product without defects and without melting the previously formed layers with the ultimate tensile strength of 583 MPa. It is shown that the use of the highest values of printing speed (320 mm/min) and wire feeding ratio (1.3) at varying the electron beam current does not allow to perform the sample formation process. It is established that at the parameters of the electron beam additive manufacturing process, which provide the complete formation of the product, the structures obtained in materials achieve ultimate tensile strength within 558-595 MPa. For citation: Zykova A.P., Nikonov S.Yu., Utyaganova V.R., Kolubaev E.A. In fl uence of electron beam additive manufacturing process parameters on structure and properties of austenitic stainless steel 321. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2020, vol. 22, no. 2, pp. 63–75. DOI: 10.17212/1994-6309-2020-22.2-63-75. (In Russian). ______ * Corresponding author Zykova Anna P. , Ph.D. (Physics and Mathematics), Lead Engineer Institute of Strength Physics and Materials Science of the Siberian Branch of the RAS, 2/4, pr. Akademicheskii, 634055, Tomsk, Russian Federation Tel.: +7-923-448-20-00, e-mail: zykovaap@mail.ru