Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Analysis of the welding parameters and mechanical properties in a butt joint of AA2198 T851 alloy laser welded for use in the aircraft industry
Submission Author:
Willem Nascimento , SE
Co-Authors:
Lindolfo Moreira Filho, Renan Perez, Hélcio Izário Filho, Willem Nascimento
Presenter: Willem Nascimento
doi://10.26678/ABCM.COBEM2017.COB17-5344
Abstract
The present study has as objective perform welding AA 2198T851 alloy by laser welding, according to several parameters that directly influence the performance and excellence of welding. The parameters investigated were: Flow rate of shielding gas, focal length and speed this were kept constant, varied the number of passes, Power and laser diameter. The specimen were collected in an aerospace company place and then made up laser welding of components in the Institute of Advanced Studies (IEAV). The regions of the weld were analyzed using nondestructive testing, metallographic and chemical analysis to determine the dimensions of the cross section weld beads, possible defects in the weld even as tensile tests to determine mechanical properties base material and welded joints. The chemical analysis weld bead was realized chemistry lab at the University of São Paulo (USP) / Lorena in order to determine possible volatilization elements such as: lithium and magnesium. With the results obtained was possible to observe that the mechanical strength even as quantity and size of defects are directly related to the welding parameters and volatilization part of the Lithium.
Keywords
Laser welding, AA 2198 alloy, welding parameter, tensile tests, and chemical analysis
