The contamination of the recirculated powder, namely, the material retained after the selective laser sintering of VZh159 and EP648 alloys, is studied as a function of the geometry of a part. The contamination of the recirculated powder is shown to depend mainly on the complex geometry of the part with a long perimeter of its contours and supporting elements rather than on the area of the section to be sintered. The main source of the contamination of the recirculated powder is represented by ejected particles, i.e., secondary granules, which form during a local microexplosion in the focal laser spot on a powder layer. The laws of ejection formation during synthesis are determined as functions of the type of part element to be synthesized.
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E. N. Kablov, “Next-generation materials—basis of innovations, technological leadership, and national safety of Russia,” Intellekt Tekhol., No. 2(14), 16–21 (2016).
E. N. Kablov, “What is the future made of next-generation materials, technologies of their creation and processing—basis of innovations,” Kryl’ya Rodiny, No. 5, 8–18 (2016).
E. N. Kablov, “Additive technologies—dominant of national technological initiative,” Intellekt Tekhol., No. 2(11), 52–55 (2015).
E. N. Kablov, A. G. Evgenov, O. G. Ospennikova, B. I. Semenov, A. B. Semenov, and V. A. Korolev, “Metallic powder compositions of EP648 nickel superalloy produced at FGUP VIAM GNTs RF by selective laser melting, laser gas–powder facing, and high-accuracy casting of polymers filled with metallic powders,” Izv. Vyssh. Uchebn. Zaved., Mashinostr., No. 9(678), 62–80 (2016).
M. A. Gorbovets, A. G. Evgenov, I. A. Khodinev, and M. I. Luk’yanova, “Fatigue properties of high-temperature materials produced by SLM,” in Proceedings of II International Conference on Additive Technologies: the Present and the Future, (VIAM, Moscow, 2016).
B. S. Lomberg, S. V. Ovsepyan, M. M. Bakradze, M. N. Letnikov, and I. S. Mazalov, “Application of new wrought nickel superalloys for advanced gas turbine engines,” Aviats. Mater. Tekhnol., No. S, 116–129 (2017). https://doi.org/10.18577/2071-9140-2017-0-S-116-129
A. Mostafa, I. P. Rubio, V. Brailovski, M. Jahazi, and M. Medraj, “Structure, texture and phases in 3D printed IN718 alloy subjected to homogenization and HIP treatments,” Metals, No. 7, 2–23 (2017).
A. Kreitcberg, V. Brailovski, and S. Turenne, “Elevated temperature mechanical behavior of IN625 alloy processed by laser powder-bed fusion,” Mater. Sci. Eng., A 700, 540–553 (2017).
A. Kreitcberg, V. Brailovski, and S. Turenne, “Effect of heat treatment and hot isostatic pressing on the microstructure and mechanical properties of Inconel 625 alloy processed by laser powder bed fusion,” Mater. Sci. Eng., A 689, 1–10 (2017).
J. N. Harrison, I. Toddb, and K. Mumtaz, “Reduction of micro-cracking in nickel superalloys processed by selective laser melting: a fundamental alloy design approach,” Acta Mater., No. 94, 59–68 (2015).
T. Bauer, K. Dawson, A. B. Spierings, and K. Wegener, “Microstructure and mechanical characterization of SLM processed Haynes 230,” in Proceedings of the 26th Annual International Solid Freedom Fabrication Symposium (2015), pp. 813–822.
A. M. Mancisidor, F. Garciandia, M. San Sebastian, P. Alvarez, J. Diaz, and I. Unanue, “Reduction of the residual porosity in parts manufactured by selective laser melting using skywriting and high focus offset strategies,” Phys. Procedia, No. 83, 864–873 (2016).
Zhang Fan, L. E. Levine, A. J. Allen, C. E. Campbell, E. A. Lass, S. Cheruvathur, M. R. Stoudt, M. E. Williams, and Y. Idell, “Homogenization kinetics of a nickel-based superalloy produced by powder bed fusion laser sintering,” Scr. Mater., No. 131, 98–102 (2017).
Fencheng Liu, Xin Lin, Gaolin Yang, Menghua Song, Jing Chen, and Weidong Huang, “Recrystallization and its influence on microstructures and mechanical properties of laser solid formed nickel base superalloy Inconel 718,” Rare Metals 30 (Spec. Issue), 433–438 (2011).
V. Sh. Sufliarov, A. A. Popovich, E. V. Borisov, and I. A. Polosov, “Selective laser melting of heat-resistant Ni-based alloy,” Nonferrous Metals, No. 1, 32–35 (2015).
A. A. Popovich, V. Sh. Sufiyarov, E. V. Borisov, I. A. Polozov, D. V. Masailo, and A. V. Grigor’ev, “Anisotropy of the mechanical properties of the products made by selective laser melting of powder materials,” Izv. Vyssh. Uchebn. Zaved., Poroshk. Metallurg. Funktsion. Pokrytiya, No. 3, 4–11 (2016).
V. Sh. Sufiyarov, A. A. Popovich, E. V. Borisov, and I. A. Polozov, “Selective laser melting of a heat-resistant nickel alloy,” Tsvetn. Met., No. 1 (865), 79–84 (2015).
A. N. Raevkiskh, E. B. Chabina, E. V. Filonova, and N. A. Belova, “Possibilities of EBSD for studying the structure of the nickel superalloys fabricated by selective laser melting,” Trudy VIAM, No. 12(60), St. 12. http://www.viam-works.ru. Cited May 11, 2018. https://doi.org/10.18577/2307-6046-2017-0-12-12-12
E. A. Lukina, D. V. Zaitsev, S. V. Sbitneva, and A. V. Zavodov, “State and identification of the phases in the nickel superalloys synthesized by SLS,” in Proceedings of III International Conference on Additive Technologies: the Present and the Future (VIAM, Moscow, 2017). http://elibrary.ru/item.asp?id=29034321. Cited May 15, 2018.
A. V. Zavodov, N. V. Petrushin, and D. V. Zaitsev, “Microstructure and phase composition of ZhS32 heat-resistant alloy after selective laser melting, vacuum heat treatment, and hot isostatic pressing,” Pis’ma Mater. 7 (2), 111–116 (2017).
P. N. Medvedev, I. A. Trennikov, E. V. Filonova, and E. I. Razuvaev, “Formation of crystallographic texture and structure of nickel superalloys during SLS,” in Proceedings of III International Conference on Additive Technologies: The Present and the Future (VIAM, Moscow, 2017). http://elibrary.ru/item.asp?id=29034328. Cited May 15, 2018.
N. Harrison, “Powder degradation in metal AM: impact of repeated processing on powder and parts,” in Proceedings of International Exhibition and Conference on the Next Generation of Manufacturing Technologies FormNext 2017 (2017).
B. Cheng and K. Chou, “Melt pool evolution study in selective laser melting,” in Proceedings of International Solid Freeform Fabrication Symposium—An Additive Manufacturing Conference (2015), pp. 1182–1194.
V. G. Niz’ev and F. Kh. Miradze, “Numerical simulation of laser sintering of metallic powders,” Vestn. RFFI, No. 3 (83), 58–68 (2014).
V. G. Niz’ev, F. Kh. Miradze, V. Ya. Panchenko, V. M. Chechetkin, and G. V. Ustyugova, “Heat-and-mass transfer during laser melting of a powder mixture,” Matem Model. 23 (8), 75–88 (2011).
G. A. Gordeev, M. D. Krivilev, and V. E. Ankudinov, “Computer simulation of selective laser melting of high-dispersity metallic powders,” Vych. Mekh. Sploshd. Sred 10 (3), 293–312 (2017).
Yu. A. Chivel’, D. A. Zatyagin, and I. Yu. Smurov, “System for monitoring selective laser sintering,” Izv. Vyssh. Uchebn. Zaved., Priborostr. 51 (4), 70–74 (2008).
E. N. Kablov, “Innovative solutions of FGUP VIAM GNTs RF for ‘Strategic Directions of Designing Materials and Technologies of Their Processing up to 2030,’” Aviats. Mater. Tekhnol., No. 1, 3–33 (2015). https://doi.org/10.18577/2071-9140-2015-0-1-3-33
O. G. Ospennikova, “Results of works on creating the next-generation cast and wrought nickel superalloys in 2012–2016,” Aviats. Mater. Tekhnol., No. S, 17–23 (2017). https://doi.org/10.18577/2071-9140-2017-0-S-17-23
Translated by K. Shakhlevich
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Evgenov, A.G., Shurtakov, S.V., Prager, S.M. et al. Contamination of a Recirculated Powder Material during Selective Laser Synthesis. Russ. Metall. 2019, 1343–1350 (2019). https://doi.org/10.1134/S0036029519130081
- selective laser sintering
- oxidized granules
- fractional composition
- laser synthesis
- base metal
- supporting element
- laser cusing