Surface Integrity and Wear Resistance of Maraging Steel Produced by Additive Manufacturing Direct Metal Laser Sintering

Authors : Tolga Berkay ŞİRİN, Yusuf KAYNAK

Pages : 83-92

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Publication Date : 2020-09-01

Article Type : Research Paper

Abstract :This study presents the surface integrity characteristics and wear resistance of maraging steel specimen fabricated by additive manufacturing insert ignore into journalissuearticles values(AM); direct metal laser sintering insert ignore into journalissuearticles values(DMLS);. After AM process, as-built maraging steels were heat treated by aging 490°C/3h and followed by air cooling. The specimen produced by DMLS were examined considering scanning and building area and compared with the same heat treated wrought specimen in terms of surface integrity aspects and wear resistance. Surface roughness, surface topography, microhardness and XRD analysis tests were performed to evaluate surface integrity properties of these specimens. In addition, the specimens produced by DMLS and the heat treated wrought were compared in terms of wear resistance. Our study illustrates that the wear resistance of the specimen produced by DMLS does not depend on the fabrication directions. Besides, this study revealed that specimens produced by DMLS have much higher wear resistance than wrought ones.
Keywords : Direct Metal Laser Sintering, Maraging Steel, Wear Resistance, Surface Integrity Aspects, Additive Manufacturing