Influence of Activating Flux and Surface Oxidation on Micro Structure and Mechanical Properties of TIG Welded Stainless Steel Weldments


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DOI: https://doi.org/10.15866/ireme.v7i7.3992

Abstract


The present study deals with the effect of activating flux and surface oxidation on micro structure, micro hardness and tensile strength of Tungsten Inert Gas welded 304 austenitic stainless steel plates. The thickness of the plate of 6.5 mm is considered for the investigation. The Tungsten Inert Gas welding is performed with 2.4mm diameter conical electrode tip profile with the surface condition of the plate as natural, oxidized and coated with an activating flux. Results have shown that the microstructure and mechanical properties are greatly influenced by activating flux and surface condition of plate. A-TIG welded plates give highest tensile strength when compared to TIG welded plates. Vickers micro hardness value is maximum nearer to the weld center on the cross section of the A-TIG butt weld joint.
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Keywords


Activating Flux; A-TIG Welding; Surface Oxidation; 304 Stainless Steel

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References


D.K.Aidun and S.A.Martin, Effect of sulfur and Oxygen on weld penetration of High Purity Austenitic Stainless steels, JMEPEG, Vol. 6, pp. 496-502, 1996.

R.-I.. Hsieh, Y.-T.Pan and H.-Y.Liou, The Study of Minor Elements and Shielding Gases on Penetration in TIG Welding of Type 304 Stainless steel, JMEPEG, Vol. 8, pp. 68-74, 1999.

Paulo J.Modenesi, Eustaquio R. Apolinario and Iaci M. Pereira, TIG welding with single component fluxes, Journal of Material processing and Technology, Vol. 99, pp. 260-265, 2000.

Ahmet Durgutlu, Experimental Investigation of Hydrozen in Argon as a Shielding gas on TIG Welding of Austenitic Stainless steels, Materials and Design, Vol. 25, pp. 19-23, 2003.

Shanping Lu, Hidetoshi Fujji, Hiroyuki Sugiyama and Kiyoshi Nogi, Mechanism and Optimization of de Fluxes for Deep Penetration in GTAW, Metallurgical and Material Transactions A, Vol. 34A, pp. 1901-1907, 2003.

S.W.Shyu, H.Y.Huang, K.H.Tseng and C.P.Chou, Study of the Performance of Stainless steel A-TIG Welds, JMEPEG, Vol. 17, pp. 193-201, 2007.

Hidetoshi Fujji, Toyoyuki Sato, Shanping Lu and Kiosho Nogi, Development of An Advanced ATIG(AA-TIG) welding method by controlling Marangoni Convection, Material Science and Engineering, Vol. 495, pp. 296-305, 2007.

T.Sandor, Janos Dobranszky, The Experiences of ATIG welding applied on 1.4301 type stainless steel, Materials Science Forum, Vol. 537-538, pp. 63-70, 2007.

Li Qing-ming, WANG Xin-hong, ZOU Zeng-da and WU jun, Effect of Activated flux on arc shape and Arc voltage in TIG welding, Trans. Nonferrous. Met. Soc. China, Vol. 17, pp. 486-490, 2007.

G.Ruckert, B.Huneau and S.Marya, Optimizing the design of silica coating for productivity gains during the TIG welding of 304L stainless steels, Materials and Design, Vol. 28, pp. 2387-2393, 2007.

Y.L.Xu, Z.B.Dong, Y.H.Wei and C.L.Yang, Marangoni convection and weld shape variation in A-TIG process, Theoritical and Applied Fracture Mechanics, Vol. 48, pp178-186, 2007.

Her-Yueh Huang, Effect of Shielding Gas and Activated flux on GTAW weldments, Materials and Design, Vol. 30, pp. 2404-2409, 2008.

Subothkumar and A.S.Shahi, Effect of Heat input on Microstructure and Mechanical Properties of GTAW 304 stainless steel joints, Materials and Design, Vol. 32, pp. 3617-3623, 2010.

Kuang-Hung Tseng and Chih-Yu Hsu, Performance of Activated TIG process in Austenitic Stainless steel welds, Journal of Materials Processing and Technology, Vol. 211, pp. 503-512, 2011.

Zaoui, M., Bouchoucha, A., Menasri, N., Effects of heat treatment on residual stress and mechanical properties of the welded tubes, (2011) International Review of Mechanical Engineering (IREME), 5 (4), pp. 658-663.

Moarrefzadeh, A., Numerical simulation of copper temperature field in laser beam welding process, (2011) International Review on Modelling and Simulations (IREMOS), 4 (2), pp. 935-941.

Ghosh, A., Chattopadhyaya, S., Prediction of HAZ width and yield parameters of saw process with the help of analytical solution of the transient 3D heat conduction equation, (2011) International Review of Mechanical Engineering (IREME), 5 (3), pp. 519-525.


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