Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Evaluation of microhardness profile of a joint welded with dissimilar steels
Submission Author:
FABRÍCIO CAVALCANTE , RN
Co-Authors:
FABRÍCIO CAVALCANTE
Presenter: FABRÍCIO CAVALCANTE
doi://10.26678/ABCM.COBEM2017.COB17-2336
Abstract
Structural steels have been used in various engineering applications. The use of joints welded with these steels, it becomes quite attractive. In addition, the joints can be formed with different steels, depending on the application. Thus, in the study, the AISI 8630M steel, previously butylated with the AWS ER80S-D2 (low carbon steel alloy) electrode was used to evaluate the interface between the metals involved. Microhardness tests with and without heat treatment for stress relief were performed, evaluating the interfacial regions between the metals involved, verifying the influence of the thermal treatment on the material and determining the regions of higher and lower hardness. The results showed that the buttery material presented a reduction in the microhardness when it was heat treated, with a higher intensity in the region affected by the heat, besides showing a better uniformity in the results. For final welding, used in the joint of the dissimilar joint, did not alter the microhardness of the material buttery. In this way, it was concluded that the heat treatment used helped to improve the microhardness uniformity evaluated at the materials interface.
Keywords
steel, joints welded, microhardness.
