Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
INFLUENCE OF ANNEALING AND NORMALIZING HEAT TREATMENT ON THE MICROSTRUCTURE OF THE WELD JOINT OF THE SAE 1020 STEEL
Submission Author:
Alexandra de Oliveira França Hayama , MT
Co-Authors:
Gabriel de Lima Semeler, Thailler Machado Nunes da Silva, Alexandra de Oliveira França Hayama
Presenter: Thailler Machado Nunes da Silva
doi://10.26678/ABCM.COBEM2021.COB2021-0992
Abstract
There are several welding processes, among them there is the shielded metal arc welding (SMAW). In this process, the union between the metals is achieved by heating them with an electric arc established between a shielded metal electrode and the part being welded. During the welding process there is a microstructural change in the region close to the welded joint, called the heat affected zone, which corresponds to the region that did not melt during welding, but had its microstructure and properties altered by the heat induced during the execution welding. Understanding the microstructural and mechanical changes that occur in the fusion zone, as well as in the heat affected zone (HAZ), are parameters of great importance, because affect the resistance of the welded joint. In this context, the aim of this work is studied SAE 1020 steel welded by SMAW, using AWS E6013 electrode, and subsequently subjected to heat treatment of annealing and normalization. The main results show that there is a considerable microstructural difference between the region of the solidified fusion pool and the HAZ, being constituted by columnar and equiaxial grains, respectively. Microstructural changes were also observed between the samples annealed and normalized.
Keywords
SAE 1020, welding process, Shielded Metal Arc Welding
