Welding is widely used in the present world in different industries like aerospace, automotive, nuclear and shipping industries, etc. Tungsten inert gas (TIG) welding plays a major role in welding of nickel alloy, aluminum, titanium and stainless steel because these are difficult to weld through other welding processes and also it offers superior weld quality. The nickel-base alloy Inconel 718 is commonly used in many industries due to its wide range...