Development of activated tungsten inert gas welding and its current status: A review

This article attempts to compile a list of recent tungsten inert gas welding advancements (TIG). TIG welding only allows for a few millimeters of penetration depth. This limitation of TIG welding can be overcome by a new advanced TIG technique called activated tungsten inert gas welding (ATIG). This new approach of TIG welding allows up to 8 cm to 12 cm of penetration depth. The demand for activated tungsten inert gas welding (ATIG) has risen in the past few years, and it has been rooted as a viable alternative to subtractive manufacturing. According to research, ATIG weldments have mechanical qualities that are comparable to other more expensive welding techniques. ATIG offers significant cost savings and a higher production rate when compared to other welding techniques. ATIG, on the other hand, has a number of drawbacks, including high residual slag, poor mechanical properties, and low corrosion resistance. As a result, more research is needed into ATIG weld parameter optimization, ATIG process simulation, and post-weld heat treatment to address the aforementioned issues. In light of the foregoing, the focus of this study will be on ATIG welded sample experimental research, modeling, optimization, and corrosion behavior. Furthermore, the study will consider the significant difficulties associated with metallurgical properties, such as detrimental secondary phase formation, carbon migration, hot cracking, weld distortion, and residual stresses that must be removed or reduced for the weld to be qualified.