Characterization of Thick Hard Layers with Ni-Cr-B-Fe-Al Alloy Obtained by Laser Cladding
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2009, Vol 32, Issue 1
Abstract
To increase the resistance to wear and corrosion of the surface layers made from steel with 0.45% C, multilayer deposition was tested by injection of powder with chemical composition of 8.9% Cr, 4.5% Fe, 5.1% B, 2, 4% Al, 0.6% Al; the remaining Ni, was melted in the bath with a CO2 laser in continuous wave and coupled to a mass in coordinates x-y-z. To establish the optimum deposition condition, the layers made with different laser regimes were characterized by macro-and microstructural analysis, qualitative analysis of phase with the radiation difractometry X microhardness analysis and determination of hardness on the surface of the deposited layer. Thermal stability of the laser deposited layers and their abrasive wear behavior were monitored.
Authors and Affiliations
Elena DRUGESCU, Simona Boiciuc, Constantin GHEORGHIES
Keywords
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