The Surface Stereometry and Microstructure of Steel 100CrMnSi6-4 after Ablation Laser Texturing

Abstract:

Publication presents an analysis of possibility of applying ablation laser texturing of 100CrMnSi6-4 bearing steel in the tribological aspect. Selection of different variants of laser micromachining, including pulsed radiation (λ=1.064 μm), and different variants of geometric surface texture, characteristic surface stereometry was obtained with regular arranged lubrication microchannels on the surface roller bearing steel. Maximal hardness in the melted and laser hardened zone, inside the micro-container and in its nearby zone, increased up to 800÷1000 HV0.05 (about 60÷75% increase) in comparison to the core hardness (610÷660 HV0.05). Local hardness increase even up to 1100 HV0.05 was noticed. No micro-cracks in the surface layer neither in the lubricant micro-containers were found. Moreover, no material degradation in the cross-sections in the micro-containers was noticed.

• Periodical: Key Engineering Materials (Volume 604)
• Pages: 41-44
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.604.41
• Online since: March 2014
• Authors: Wojciech Napadłek*, Zdzisław Bogdanowicz, Wojciech Chrzanowski, Artur Król
• Keywords: Hardness, Laser Texturing, Oil Microcontainers, Steel 100CrMoSi6-4, Surface Layer

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