研究目的
To determine the influence of carbon content on the macro- and microstructure, microhardness and corrosion resistance of boronized layers on steels C45 and CT90 after laser modification.
研究成果
The thickness of the boronized layer was higher in the substrate with lower carbon content. Laser remelting of the boronized layer reduces microhardness gradient on cross-section, and the specimens with laser boronized layers were characterized by better corrosion resistance than specimens without modified layer. No significant effect of carbon content on the corrosion resistance of studied samples was found.
研究不足
The study focused on two types of steel (C45 and CT90) and specific boriding and laser modification parameters. The findings may not be generalizable to other materials or treatment conditions.
1：Experimental Design and Method Selection:
The study involved diffusion boriding followed by laser modification using a diode laser. The microstructure, microhardness, and corrosion resistance were analyzed.
2：Sample Selection and Data Sources:
Specimens made of C45 medium-carbon structural steel and CT90 high-carbon tool steel were used.
3：List of Experimental Equipment and Materials:
EKabor? powder mixture for boriding, TRUDIODE 3006 diode laser for laser modification, Metaval Carl Zeiss light microscope for microstructure observation, Zwick 3212B Vickers hardness tester for microhardness measurement, potentiostat-galvanostat ATLAS 0531 for corrosion resistance studies.
4：Experimental Procedures and Operational Workflow:
Specimens were boronized using gas-contact method, then modified using laser beam. Microstructure observations, microhardness profiles, and corrosion resistance studies were conducted.
5：Data Analysis Methods:
Microstructure was observed using a light microscope, microhardness was measured using a Vickers hardness tester, and corrosion resistance was determined using potentiodynamic method.
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