EFFECT OF HEAT TREATMENT OF CMT WELD ON ITS MECHANICAL PROPERTIES

The CMT (Cold Metal Transfer) welding process allows to achieve optimal results when joining different kind of metals. The article deals with the mechanical properties of CMT welded joints, specifically verification of mechanical properties changes before and after heat treatment. CMT welding is a new approach that allows joining of different types of metals, creating a weldment with specific mechanical and chemical properties. A heat treatment is widely used to modify the mechanical properties of the material. In case of different kind of metals weldment, the heat treatment is difficult because of different properties of the basic welded metals. The heat treatment has to be optimized to improve the properties of all the materials used in the welded joint. A tensile strength test will be used to verify changes in the mechanical properties of the weldments.