Influence Environment and Parameters Ablative Laser Texturing on Selected Properties Surface Layer Steel 100CrMnSi6-4

Abstract:

This paper presents results of laboratory investigation microstructure bearing steel 100CrMnSi6-4 after laser hardening in the air and cryogenic environment. Usied high-power laser CO₂ (4 kW) were selected the best parameters for hardening process (power density, scanning speed, the overlap surface hardened zones). As a result, laser hardening of the surface layer steel 100CrMnSi6-4 with selected process parameters obtained highdispersing martensitic microstructure of microhardness to 900HV0.1 with isolated fragmented chromium carbides. In the heat affected zone found martensitic- bainitic and bainite microstructure. In comparison with conventional hardening (e.g. inductive) were significant microstructure fragmentation and increase hardness about 15%. This paper presents ablative laser texturing surface layer above steel hardened before by laser. Texturing process was carried out in two environments and used pulsed iterbium fiber laser radiation Nd: YAG with a wavelength λ = 1064 nm.

• Periodical: Advanced Materials Research (Volume 874)
• Pages: 17-22
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.874.17
• Online since: January 2014
• Authors: Wojciech Napadłek*
• Keywords: Ablative Laser Texturing, Laser Hardening, Steel 100CrMnSi6-4

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DOI: 10.1080/10402000208982572

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