Preparation of nitrogen-containing steel 04Kh20N6G11M2AFB powder and subsequent selective laser melting (SLM) are studied. The effect of oxygen in the atomizing nitrogen gas on powder nitrogen content is established. Nitrogen content in a monolithic sample is maintained after SLM. Comparative analysis of SLM-specimen mechanical properties and 04Kh20N6G11M2AFB steel is conducted.
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Work was carried out with financial support of the Russian scientific Fund for the area “Performance of fundamental and investigative research for priority thematic research areas” (project No. 15-19-00210). Experimental research was performed on equipment of the Center for Collective Use of Scientific Equipment “Composition, structure and properties of structural and functional materials” NITs Kurchatov Institute – TsNII KM Prometei with financial support of the state in the name of the Ministry of education and science within the scope of an agreement No. 14.595.21.0004.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 76 – 80, January, 2020.
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Kuznetsov, P.A., Shakirov, I.V., Bobyr’, V.V. et al. Features of Melt Gas Atomization and Selective Laser Melting of High-Strength Austenitic Nitrogen-Containing Steel Powders. Met Sci Heat Treat 62, 76–80 (2020). https://doi.org/10.1007/s11041-020-00515-2
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DOI: https://doi.org/10.1007/s11041-020-00515-2