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Influence of Postprocessing on Wear Resistance of Aerospace Steel Parts Produced by Laser Powder Bed Fusion

1
Department of High-Efficiency Processing Technologies, Moscow State University of Technology «STANKIN», Vadkovsky per. 1, 127055 Moscow, Russia
2
Department “Technology of Construction Materials”, Moscow Automobile and Road Construction State Technical University (MADI), Leningradsky Prospect 64, 125319 Moscow, Russia
*
Authors to whom correspondence should be addressed.
Technologies 2020, 8(4), 73; https://doi.org/10.3390/technologies8040073
Received: 2 November 2020 / Revised: 19 November 2020 / Accepted: 26 November 2020 / Published: 2 December 2020
(This article belongs to the Special Issue Additive Manufacturing: Fundamentals and Practice)
The paper is devoted to the research of the effect of ultrasonic postprocessing—specifically, the effects of ultrasonic cavitation-abrasive finishing, ultrasonic plastic deformation, and vibration tumbling on surface quality, wear resistance, and the ability of real aircraft parts with complex geometries and with sizes less than and more than 100 mm to work in exploitation conditions. The parts were produced by laser powder bed fusion from two types of anticorrosion steels of austenitic and martensitic grades—20Kh13 (DIN 1.4021, X20Cr13, AISI 420) and 12Kh18N9T (DIN 1.4541, X10CrNiTi18-10, AISI 321). The finishing technologies based on mechanical action—plastic deformation, abrasive wear, and complex mechanolysis showed an effect on reducing the submicron surface roughness, removing the trapped powder granules from the manufactured functional surfaces and their wear resistance. The tests were completed by proving resistance of the produced parts to exploitation conditions—vibration fatigue and corrosion in salt fog. The roughness arithmetic mean deviation Ra was improved by 50–52% after cavitation-abrasive finishing, by 28–30% after ultrasonic plastic deformation, and by 65–70% after vibratory tumbling. The effect on wear resistance is correlated with the improved roughness. The effect of used techniques on resistance to abrasive wear was explained and grounded. View Full-Text
Keywords: anticorrosion steel; laser powder bed fusion; roughness; ultrasonic deep rolling; ultrasonic liquid treatment; vibration tumbling; wear resistance anticorrosion steel; laser powder bed fusion; roughness; ultrasonic deep rolling; ultrasonic liquid treatment; vibration tumbling; wear resistance
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MDPI and ACS Style

Metel, A.S.; Grigoriev, S.N.; Tarasova, T.V.; Filatova, A.A.; Sundukov, S.K.; Volosova, M.A.; Okunkova, A.A.; Melnik, Y.A.; Podrabinnik, P.A. Influence of Postprocessing on Wear Resistance of Aerospace Steel Parts Produced by Laser Powder Bed Fusion. Technologies 2020, 8, 73. https://doi.org/10.3390/technologies8040073

AMA Style

Metel AS, Grigoriev SN, Tarasova TV, Filatova AA, Sundukov SK, Volosova MA, Okunkova AA, Melnik YA, Podrabinnik PA. Influence of Postprocessing on Wear Resistance of Aerospace Steel Parts Produced by Laser Powder Bed Fusion. Technologies. 2020; 8(4):73. https://doi.org/10.3390/technologies8040073

Chicago/Turabian Style

Metel, Alexander S.; Grigoriev, Sergey N.; Tarasova, Tatiana V.; Filatova, Anastasia A.; Sundukov, Sergey K.; Volosova, Marina A.; Okunkova, Anna A.; Melnik, Yury A.; Podrabinnik, Pavel A. 2020. "Influence of Postprocessing on Wear Resistance of Aerospace Steel Parts Produced by Laser Powder Bed Fusion" Technologies 8, no. 4: 73. https://doi.org/10.3390/technologies8040073

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