A study on mechanical properties of two dissimilar aluminium alloys (Al 2014 &Al7075) through friction stir welding.

The main purpose of our project is to analyse the mechanical properties of friction stir welded dissimilar aluminium alloys which is Aluminium-2014 and Aluminium-7075. Welding and rotational speed are decided using trial and error method in order to get non defective welds and without any damage like crack and entirely broken. Materials which are difficult to weld by normal welding process can be welded using friction stir welding process. Material Al-2014 and Al-7075 alloy were selected for welding. These welded aluminium compounds are of a thickness of 6.0 mm using a traditional processing machine. The length and breadth of the aluminium work pieces are 100mm and 50mm. First the the two different plates are joined using friction stir welding process after that the welded parts are cut down for tensile and impact testing, and further taken for SEM analysis. After the cutting process the the separated pieces are tested against their ability to withstand how much load before breaking and their ability to acquire how much energy during their fracture,and analysed by scanning electron microscope(SEM). [ABSTRACT FROM AUTHOR]