Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EFFECTS OF THE WELDING PROCESS ON THE STRUCTURE AND MECHANICAL PROPERTIES OF STEEL 4130
Submission Author:
Maria Augusta de Magalhães Mendonça , MA
Co-Authors:
Maria Augusta de Magalhães Mendonça
Presenter: Maria Augusta de Magalhães Mendonça
doi://10.26678/ABCM.COBEM2019.COB2019-0322
Abstract
Welding of low alloy and high strength steels represents a constant challenge to the metallurgical industry due to the great industrial need to associate rigorous requirements of high mechanical strength and toughness simultaneously with a material. In this context, the present work aimed to conduct a comparative study on the weldability of SAE 4130 steel, commonly used in the aeronautics and automotive industry. The first analyzes aimed to characterize the steel in its state of supply with mechanical tensile and hardness tests in addition to a metallographic analysis. Later, conventional welding techniques such as Tungsten Inert Gas and Coated Electrode were applied. Shielded Metal Arc Welding - SMAW), being manufactured test specimens following the AWS - American Welding Society standards. After welding, a detailed metallographic analysis was carried out with the purpose of obtaining and comparing information related to the changes caused to both welding processes. A microstructural characterization of the Fusion Zone (ZF) and Thermal Affected Zone (ZTA) was performed.
Keywords
soldagem GTAW, Soldagem SMAW, Aço SAE 4130, Soldabilidade
