Laser surface modification of boronickelized medium carbon steel. (November 2015)

• Record Type: Journal Article
• Authors: Bartkowska, Aneta; Pertek, Aleksandra; Kulka, Michał; Klimek, Leszek
• Is Part Of: Optics & laser technology. Volume 74(2015)
• Page Start: 145
• Page End: 157
• Publication Date: 2015-11
• Subjects: Boriding -- Boronickelizing -- Laser heat treatment; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2015.05.014
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: A two-step process was applied to produce the multicomponent boride layers. Boronickelizing consisted of nickel plating and diffusion boriding. Two different methods of heat treatment of boronickelized C45 steel were used: a typical through-hardening, and a laser surface modification with remelting. Microstructure and some mechanical properties of these layers were examined. Microstructural characterization was studied using optical microscope, Scanning Electron Microscope, energy-dispersive X-ray microanalysis, Electron Back-Scatter Diffraction and X-ray diffraction. The laser modification improved wear resistance, cohesion as well as low-cycle fatigue of the boronickelized layer. Compressive stresses, occurring after laser remelting, could be the reason for the advantageous mechanical behavior of the layer. Highlights: Nickel plating and diffusion boriding were used to produce multicomponent layers. Two methods of heat treatment were used: typical hardening and laser remelting. The advantageous influence of LHT on mechanical properties was observed. LHT caused the occurrence of compressive stresses in the layer.