Effect of Pulsed Current on Joining of 7075 T6 Aluminium Alloy by TIG Welding Process

7075 T6 aluminum alloys are applied in aircraft construction. The success of their weldability is a technological challenge bringing advantages the lightening structures. This work was carried out aim to analyze mechanical behavior and microstructural evolution sheets welded by TIG process, applying pulsed current. A notable change occurred our materials thermal effect, resulting degradation properties. break samples privileged connecting region, which characterized columnar structure, contributing reduce ability material deforme plastically.