Investigation on the Micro-Structure and Mechanical Properties of Heat Affected Zone for GTAW in IS-2062 Plate

There are numerous categories of joining processes and welding is one such method used by a majority of fabricators in the manufacturing sector. Gas Tungsten Arc Welding (GTAW), popularly known as Tungsten Inert Gas (TIG) Welding, is one of the most traditional arc welding methods that make use of a non-consumable electrode to produce the weld. The most effective feature of this technique is the intense heat source. TIG welding offers the operator greater control over the weld than other processes such as Shielded Metal Arc Welding and Gas Metal Arc Welding, thus, allowing for stronger and higher quality welds. With this experiment, we will be differentiating between the varying effects of controlling parameters over the heat affected zone (HAZ) due to GTAW for a low carbon steel specimen. Properties such as hardness, brittleness and tensile strength in the HAZ of IS-2062 and its relation with the microstructural changes caused due to heat input have been a focus of this work.