WELDED JOINTS STUDIES ON THE DEVELOPMENT OF BRAZED ALUMINUM SHEETS

Abstract

Currently, the joints of different steel and aluminum materials are widely used for the manufacture of hybrid structures in the automotive field, in various naval constructions and transports mainly due to the need to reduce weight and achieve energy savings. The joining of aluminum sheets by welding or brazing means that two pieces are connected to each other through certain processes to form a whole and the structure thus created is of high performance. The materials chosen to make this type of welding-brazing are the result of laboratory analyses, they must be properly joined to be able to ensure the required strength of these joints. This work aims to study the realization of MIG welded-brazed joints of aluminum alloys with steel, which are complex joint structures that require high strength connections. The materials to be joined were chosen, a morphological analysis of the joint was carried out with the help of electronic microscopy, as well as various tensile tests to confirm the resistance of these joints.