Journal
ENGINEERING RESEARCH EXPRESS
Volume 3, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/2631-8695/ac3770
Keywords
AISI 201; A-TIG; penetration; microstructure
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The use of TiO2 flux in A-TIG welding of ASS-201 grade results in higher penetration compared to SiO2 flux, whereas welding with SiO2 leads to higher hardness in the HAZ and weld region than the TIG welding process.
Austenitic stainless steel (ASS) is widely fabricated by tungsten inert gas (TIG) welding for aesthetic look and superior mechanical properties while compared to other arc welding process. Hitherto, the limitation of this process is low depth of penetration and less productivity. To overcome this problem activated tungsten inert gas (A-TIG) welding process is employed as an alternative. In this investigation the welding performance of conventional TIG welding is compared with A-TIG process using TiO2 and SiO2 flux with respect to weld bead geometry. The experimental investigation on A-TIG welding of ASS-201 grade shows TiO2 flux helps in achieve higher penetration as compared to SiO2 flux. While welding with SiO2 the hardness in HAZ and weld region higher than that of TIG welding process.
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