Análise do comportamento da soldagem em aço SAE 1020

Abstract

Solder joining is the main method of joining metals permanently. Thus, it is necessary to study the behavior of the weld in metals, in this work the properties of the weld applied to SAE 1020 steel will be analyzed, as it is one of the main types of steel with the most diverse applications. For this analysis, the specimen must be prepared, welded with the defined methods (MAG and coated electrode) and submitted to mechanical tests. The specimen was prepared to analyze only the weld region, without taking into account the thermally affected areas and the base metal. Through the penetrating liquid test, it was observed that the coated electrode presented greater weldability, generating less imperfections and weld spatter. The tensile test revealed that the applied MAG weld has greater tensile strength and lower ductility. With the crystal structure obtained through metallography, the type of steel used for the experiment was confirmed.