GAS TUNGSTEN ARC WELDING AND PLASMA ARC WELDING OF DUPLEX STAINLESS STEEL
Keywords:
Duplex Stainless Steel, GTAW, PAWAbstract
To study the welding characteristics of Duplex stainless steel (S2205) plate of 8 mm thickness by performing Gas tungsten arc welding(GTAW) and Plasma arc welding(PAW) .Vickers Microhardness Test, Bend test, Microstructure analysis are done in order to obtain the welding characteristics. The joint fabricated by the Gas Tungsten arc welding (GTAW) is found to have higher hardness in the weld region when compared to the joints fabricated by Plasma arc welding (PAW) process. To evaluate the quality of weld as a function of ductility, bend test is performed and breakage report is obtained. Microscopic examination was conducted to study the material behaviour in the Base metal, Heat affected zone (HAZ) and Weld zone of the welded sample. The major weld defects occurring in the joints fabricated by Gas tungsten arc welding (GTAW) and Plasma arc welding (PAW) processes was determined by Radiographic Testing.
Downloads
References
Terry A Debold (1989), “Duplex Stainless Steel Microstructure and Properties”, Journal of Minerals Materials and Metal Society, Vol. 41, 12-15
Jerzy Nowacki and Paweł Rybicki (2006), “The influence of welding heat input on submerged arc welded duplex steel joints imperfections”, Journal of Achievements in Material and Manufacturing Engineering, Vol. 17, 113-116
Torbati A M, Miranda R M, Quintino L and Williams S (2011), “Welding Bimetal Pipes in Duplex Stainless Steel”, The International Journal of Advanced Manufacturing Technology, Vol. 53 , 1039-1047
Jose Maria Gomez de Salazar , Alicia Soria and Maria Isabel Barrena (2007), “The effect of N2 addition upon the MIG welding process of duplex steels”, Journal of Material Science, Vol. 42, 4892-4898
Bhatt R B, Kamat H S, Ghosal S K and De P K (1999), “ Influence of Nitrogen in the Shielding Gas on Corrosion Resistance of Duplex Stainless Steel Welds”, Journal of Materials Engineering and Performance, Vol. 8, 591-597
Sathiya P, Aravindan S, Soundararajan R and Noorul Haq A (2009), “Effect of shielding gases on mechanical and metallurgical properties of duplex stainless-steel welds”, Journal of Material Science, Vol. 44, 114-121
Jing Wang, Min-xu Lu, Lei Zhang, Wei Chang, Li-ning Xu and Li-hua Hu (2012), “Effect of welding process on the microstructure and properties of dissimilar weld joints between low alloy steel and duplex stainless steel”, International Journal of Minerals, Metallurgy and Materials, Vol. 19,518-524
Huei-Sen Wang (2003), “Effect of Welding Variables on Cooling Rate and Pitting Corrosion Resistance in Super Duplex Stainless Weldments” , Materials Transactions, Vol. 46, 593-601
Tsann-Shyi Chern ,Kuang-Hung Tseng and Hsien-Lung Tsai (2011), “Study of the characteristics of duplex stainless steel activated tungsten inert gas welds”, Materials and Design, Vol. 32, 255-263
Dong Min, Jun Shen, Shiqiang Lai and Jie Chen (2009), “Effect of heat input on the microstructure and mechanical properties of tungsten inert gas arc butt-welded AZ61magnesium alloy plates”, Materials Characterization, Vol. 60, 1853-1590
Emel Taban (2008), “Toughness and Microstructural analysis of Super Duplex Stainless Steel Joined by Plasma Arc Welding”, Journal of Material Science, Vol. 43, 4309-4315
Yousefieh M, Shamanian M and Saatchi A (2011) “Optimization of the pulsed current gas tungsten arc welding parameters for corrosion resistance of super duplex stainless steel welds using the Taguchi method”, Journal of Alloys and Compounds, Vol. 509, 782-788
