Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Yb-fiber powder laser cladding of Inconel 625
Submission Author:
Viviane Kettermann Fernandes , SC
Co-Authors:
Viviane Kettermann Fernandes, Adriano de Souza Pinto Pereira, Jhonattan Gutjahr, Marcio C. Fredel, Milton Pereira, Walter Lindolfo Weingaertner, Alexander Laschkow
Presenter: Milton Pereira
doi://10.26678/ABCM.COBEM2017.COB17-2254
Abstract
There are several techniques to clad a surface and, therefore, change its properties. Among them laser cladding has as advantages low dilution and layer consistency. The use of powder as feedstock material in the laser cladding process turns possible the attainment of high quality coatings once there is higher deposition control, in comparison with the process feed by wire. Such laser cladding variant can be used in specific applications with high imbedded value, as gas turbine parts repair. The aim of this study is to produce a cladded surface by laser cladding based on a high-power Ytterbium Fiber laser source, using Inconel® 625 powder as feedstock material and A516 - Gr.70 as substrate material, while aiming for low dilution and high productivity. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, optical microscopy and microhardness techniques were applied to investigate the interface between coating and base material. By varying speed rate (1000-4000 mm/min), distance to focus (15-35 mm) and power output (0.5-1 kW) it was possible to produce a surface with satisfactory layer consistency, low dilution and optimized productivity. Based on the results, laser cladding demonstrated itself as an efficient process and a possible technique for the application of high quality clads.
Keywords
LASER Cladding, Powder, Inconel 625, corrosion protection
