Influência da geometria da ferramenta no processo de solda por fricção (FSW) entre alumínio (6060 T5) e cobre (C110)

Abstract

The Friction Stir Welding (FSW) Friction Welding Technique is relatively new compared to other large-scale processes used by industries where it was developed and patented at The Welding Institute (TWI) in the UK in 1991, this technique consists of joining of one or more solid-state and non-fused materials thereof. Obtaining quality welds has several variables, especially the tool geometry and welding parameters involved, including welding speed and rotation. Correctly defined tool combinations, joining material and parameters, the mechanical properties obtained in welds are similar to that of the material in the initial state. The present study aims to analyze the relationship between the tool variable, alternating its geometry, when subjected to a set of process parameters aiming to obtain welds with lower level of discontinuities in aluminum alloys (6060 T5) and the copper (C110), maintaining a constant rotation speed and feedrate for all samples. Decomposing into specific objectives to determine the appropriate process parameters, from the fabrication, quenching and tempering of SAE H13 steel tools to the microhardness and tensile tests, performed to analyze the mechanical properties resulting from the welds and comparing them as a function of variation. of geometry. Considering the general steps of the process, according to the auxiliary biography, and the procedures to be performed in the tests and experiments, it can be concluded that the study and the methodology used to evaluate the results made it possible to verify the influence of the tool profile change. , where the hexagonal geometry tool presented the best results, and these values are considered satisfactory, when compared to previous studies and works on the subject, it is expected that the work contributes to the knowledge of the friction welding area between two different materials.