VGTU talpykla > Mechanikos fakultetas / Faculty of Mechanics > Moksliniai straipsniai / Research articles >

Lietuvių   English
Please use this identifier to cite or link to this item: http://dspace.vgtu.lt/handle/1/4123

Title: Effect of Laser Processing on Surface Properties of Additively Manufactured 18-Percent Nickel Maraging Steel Parts
Authors: Černašėjus, Olegas
Škamat, Jelena
Markovič, Vladislav
Višniakov, Nikolaj
Indrišiūnas, Simonas
Keywords: laser surface processing
additive manufacturing
maraging steel
surface modification
hardness
morphology
wear
Issue Date: 2020
Publisher: MDPI
Citation: Černašėjus, O.; Škamat, J.; Markovič, V.; Višniakov, N.; Indrišiūnas, S. Effect of Laser Processing on Surface Properties of Additively Manufactured 18-Percent Nickel Maraging Steel Parts. Coatings 2020, 10, 600.
Series/Report no.: 10;6
Abstract: In the present work, the experimental study on laser processing of additively manufactured (AM) maraging steel part surface was conducted. Nanosecond pulsed laser at ablation mode was used for surface modification in oxidizing atmosphere. The morphology, roughness, elemental and phase composition, microhardness and tribological properties of the processed surfaces were investigated. The obtained results revealed that pulsed laser processing under the ablation mode in air allows obtaining modified surface with uniform micro-texture and insignificant residual undulation, providing 3 times lower roughness as compared with the as-manufactured AM part. The intensive oxidation of surface during laser processing results in formation of the significant oxides amount, which can be controlled by scanning speed. Due to the presence of the oxide phase (such as Fe2CoO4 and Ti0.11Co0.89O0.99), the hardness and wear resistance of the surface were significantly improved, up to 40% and 17 times, respectively. The strong correlation between the roughness parameter Ra and mass loss during the tribological test testifies the significant role of the obtained morphology for the wear resistance of the surface.
Description: This article belongs to the Section Surface Characterization, Deposition and Modification
URI: http://dspace.vgtu.lt/handle/1/4123
ISSN: 2079-6412
Appears in Collections:Moksliniai straipsniai / Research articles

Files in This Item:

File Description SizeFormat
Effect of Laser Processing on Surface Properties of Additively Manufactured 18-Percent Nickel Maraging Steel Parts.pdf7.65 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback