Eventos Anais de eventos
COBEF 2019
COBEF 2019
APPLICATION OF BARKHAUSEN MAGNETIC NOISE FOR FRICTION STIR WELDED JOINTS CHARACTERIZATION
Submission Author:
Julian Arnaldo Avila Diaz , SP
Co-Authors:
Julian Arnaldo Avila Diaz, Fabio Conde, Brenno Pastori, Freddy Armando Franco Grijalba
Presenter: Julian Arnaldo Avila Diaz
doi://10.26678/ABCM.COBEF2019.COF2019-0529
Abstract
Friction stir welding (FSW) is an alternative process of joining materials, characterized by high deformation forces and lower peaks of temperature when compared to fusion welding. The FSW produces a variety of microstructures due to a different amount of deformation and cooling rates during welding, producing a complex profile of residual stress. In this study, the main goal was to use the Magnetic Barkhausen Noise (MBN) technique, a non-destructive and qualitative method, to evaluate residual stress, hardness and microstructure along the FSWelded joint region. The material used was a 9.5 mm thick X80 steel plate, welded using a 300 rev min-1 spindle speed and 100 mm min-1 welding speed with a polycrystalline cubic boron nitride with tungsten-rhenium (PCBN-WRe) tool. The results show a good correlation with profiles of residual stress and hardness reported in the literature for this type of joints, as well as the differentiation of the microstructures through the different evaluated regions.
Keywords
FSW – Friction Stir Welding Soldagem, Non-destructive testing, Residual stresses, magnetic Barkhausen noise
