Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
PARAMETRIZATION EFFECT IN RELATION TO MICROHARDNESS, MICROSTRUCTURE AND GEOMETRY OF ROCKIT 401 ALLOY DEPOSITED VIA DIRECTED ENERGY DEPOSITION
Submission Author:
Renato Panziera , SC , Brazil
Co-Authors:
Renato Panziera, Milton Pereira, Richard de Medeiros Castro, Elvys Isaias Mercado Curi
Presenter: Renato Panziera
doi://10.26678/ABCM.COBEM2021.COB2021-0958
Abstract
The method of deposition of metallic coatings via laser, known as laser cladding, has been used to cover different surfaces and materials in various applications. For each combination of deposited material and substrate, a preliminary study with different parameters of the alloy deposition process is important to study, as these parameters directly influence the mechanical and physical properties of the deposited material. In this work, a study was carried out on the effects that parameterization has in relation to geometry, microstructure, and microhardness of the Rockit 401 metallic alloy deposited via laser Directed Energy Deposition (DED). As a result, it was identified that with the variation of process parameters such as scan speed and power, different bead geometries are obtained, as well as microstructure, and microhardness values. Using the lowest scanning speed of 5 mm/s and low power resulted in higher microhardness values. With increasing power, the alloy's dendritic microstructure presents larger grains, which resulted in a decrease in microhardness. With increasing scan speed, dendritic structures decreased along with microhardness values. Thus, it is clear the importance of tracking the optimized range of the parameters under analysis for each metal alloy.
Keywords
coating, LASER, Parameters, Microstructure, Microhardness
