Effect of the Chemical Composition of Powder Stock on the Strength of Materials After Selective Laser Melting
- 28 Downloads
The procedure of selective laser fusion of powder materials is used to develop compositions of new corrosion-resistant steels. The elevation hardness of the materials is detected in all tests, as the power and rate parameters of treatment increase. The relationship between the increase in the level of hardness of a metal, its carbon equivalent, and the chemical composition of the metal in the fusion zone is discovered. It is assumed that the growth of hardness depends on the structural changes, i.e., on the processes of formation and dissolution of hardening phases. The metallographic methods are used for the structural investigations.
Key wordsadditive technologies selective laser fusion hardening phases
The present work was financially supported by the Grant of the Russian Scientific Foundation No. 15-19-00210. The experimental studies were performed on the equipment of the Center of Collective Use “Composition, Structure, and Properties of Structural Materials” at the NRC “Kurchatov Institute” – CRISM “Prometey” and supported by the Ministry of Education and Science of Russian Federation (unique subsidy identifier — RFMEF159517X0004).
- 1.V. P. Perevertov, I. K. Andronchev, and M. M. Abulkasimov, “The technologies of treatment of materials by concentrated energy flows,” Nadezhn. Kach. Slozhn. Sist., No. 3(11), 69 – 79 (2015).Google Scholar
- 2.I. V. Shishkovskii, Fundamentals of Additive High-Resolution Technologies [in Russian], Piter, St.-Petersburg (2016).Google Scholar
- 3.S. L. Campanelli, N. Contuzzi, A. Angelastro, and A. D. Ludovico, “Capabilities and performances of the selective laser melting process,” in: Zh. Lian (ed.), New Trends in Technologies: Devices, Computer, Communication and Industrial Systems, Intech, Rijeka (2010), pp. 233 – 252.Google Scholar
- 4.T. V. Tarasova, “Prospects of the use of the laser irradiation for increasing the wear resistance of corrosion-resistant steels,” Metalloved. Term. Obrab. Met., No. 6, 54 – 58 (2010).Google Scholar
- 8.Yu. P. Aganaev, A. M. Gur’ev, B. D. Lygdenov, and V. A. Butukhanov, “Influence of the energy inhomogeneity of the interface on the formation of the structure of metals and alloys in the course of periodic crystallization,” Polzun. Al’manakh, No. 2, 25 – 29 (2014).Google Scholar
- 9.A. Yu. Kolosov, N. Yu. Sdobnyakov, P. V. Komarov, et al., “Study of thermodynamic and structural characteristics in the process of coalescence of nanoparticles of metals of various shapes,” in: Proc. of the 4th Int. Interdisciplinary Symposium “Physics of Nanosized Systems” [in Russian], MART, Rostovon-Don (2014), pp. 104 – 109.Google Scholar
- 10.B. K. Barakhtin and A. M. Nemets, Metals and Alloys. Analysis and Study. Physico-Analytical Methods for the Investigation of Metals and Alloys. Nonmetallic Inclusions [in Russian], Professional, St.-Petersburg (2006).Google Scholar
- 11.B. K. Barakhtin, A. V. Voznyuk, A. A. Deev, and A. S. Zhukov, “Structural-mechanical state of an additive material under the conditions of hot plastic deformation,” Deform. Razrush. Mater., No. 4, 22 – 32 (2016).Google Scholar
- 12.V. A. Karkhin, Thermal Processes in Welding [in Russian], Izd. Politekh. Univ., St.-Petersburg (2013).Google Scholar
- 13.V. A. Ivensen, Sintering Phenomenology and Some Theoretical Questions [in Russian], Metallurgiya, Moscow (1985).Google Scholar
- 14.V. V. Skorokhod, “Science of sintering: evolution of ideas, achievements, current problems, and new trends. Problem of active sintering,” Poroshk. Metall., No. 1/2, 26 – 39 (2016).Google Scholar