Abstract
Austenitic stainless steel (ASS) plays an important role in fabrication and manufacturing of products due to its good mechanical properties and easy weldability mostly for all types of welding. In fabrication, there are numerous welding techniques available for ASS such as gas metal arc welding, tungsten inert gas (TIG) welding, electroslag welding, submerge arc welding, electron beam, thermite welding. TIG welding is the most common operation use for joining of two similar or dissimilar metals with heating or applying the pressure by using the filler material. TIG welding technique is used in several industries like automobile, aerospace, marine, etc. due to its quick and precise process. This paper systematically reviewed the TIG and A-TIG welding processes of ASS which included several recent experimental activities. In TIG welding, the inputs such as voltage, current, filler materials and shielding gasses, the type of flux and passes ultimately affect its output weld quality. In addition, a comparison has been provided for parameters of TIG and A-TIG welding process and their weld outcomes such as microstructure, mechanical, penetration depth, and weld bead quality. A-TIG has better hardness and mechanical properties than TIG welding.
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