“…It has the advantages of high strength, reliability in processing, corrosion resistance and good heat treatment properties, and is widely used in various fields such as aerospace, automotive engineering, construction, marine engineering, electronics and transportation [ 1 , 2 , 3 , 4 , 5 ]. Aluminum alloys are lightweight and inexpensive, and are widely used in the manufacture of structural parts for automobiles to achieve light weight [ 6 ]. MIG welding is a welding method that uses inert gas to protect the weld metal from contamination.…”