Abstract
Stainless steel (SS) is sensitized by a thermal treatment in the range of 400–850 °C and inter-granular attack would occur upon subsequent exposure to certain media. In many practical situations, such as welding, sensitization is best studied by continuous cooling through the sensitizing temperature range wherein the variables are the peak temperature reached and the cooling rate in contrast to temperature and time of the isothermal hold which has been the customary practice. There are also various methods of controlling the inter-granular corrosion viz. lowering the carbon content, adding stabilizers and applying solution heat treatment but all these methods are either costly or difficult to apply. This study is focussed on the effect of cryogenically treated tungsten electrode of TIG welding on the sensitization behaviour of 304SS by taking into consideration the weld properties (like: hardness, tensile strength, percentage elongation and micro-structure). The parameters of significance are current, pulse frequency and gas flow rate. Further the study suggested that the results of non cryo treated electrode were better than the treated one on sensitization of welded joints during TIG welding within the range of selected parameters.
Similar content being viewed by others
References
S. Natrajan, S.P.B. Kumaresh, Corrosion and its inhabitation in SA213-T22 weldments used in power plants under neutral and alkaline environments. Mater. Sci. Eng. J. 432, 47–51 (2006)
A.A.S. Mousavi, R. Misersmaeilli, Experimental and numerical analyses of residual stress distributions in TIG welding process for 304L stainless steel. Mater. Process. Technol. J. 208, 383–394 (2008)
J. Qinglei, G.L. Yajian, W.J. Puchko, X. Chunzhi, Microstructure characteristics in TIG welded joint of Mo-Cu composite and 18-8 stainless steel. Refract. Metals Hard Mater. J. 28, 429–433 (2010)
J. Yan, M. Gao, X. Zengng, Study on microstructure and mechanical properties of 304 stainless steel joints by TIG, laser and laser-TIG hybrid welding. Opt. Lasers Eng. J. 48, 512–517 (2010)
S. Kumar, A.S. Shahi, Effect of heat input on the microstructure and mechanical properties of gas tungsten arc welded 304 stainless steel joints. Mater. Des. J. 32, 3617–3623 (2011)
A. Traidia, F. Roger, Numerical and experimental study and weld pool behaviour for pulsed current Gas Tungsten Arc welding. Heat Mass Transf. J. 54, 2163–2179 (2011)
T. Yuri, T. Ogata, M. Saito, Y. Hirayama, Effect of welding structure and delta ferrite on fatigue properties for TIG welded austenitic stainless steels at cryogenic temperatures. Cryog. J. 40, 251–259 (2000)
L. Chun-Ming, T. Hsien-Lung, C. Chun-Der, Y. Cheng, Effect of repeated weld-repairs on microstructure, texture, impact properties and corrosion properties of AISI 304L stainless steel. Eng. Fail. Anal. 21, 9–20 (2012)
D. Li, S. Lu, D. Wenchao, D. Li, Y. Li, Study of the law between the weld pool shape variations with the welding parameters under two TIG processes. J. Mater. Process. Technol. 212, 128–136 (2012)
A. Kumar, S. Sundarrajan, Optimization of pulsed TIG welding process parameters on mechanical properties of AA5456 aluminum alloy weldments. Mater. Des. 30(4), 1288–1297 (2009)
A. Kumar, S. Sundarrajan, Effect of welding parameters on mechanical properties and optimization of pulsed TIG welding of Al–Mg–Si alloy. Int. J. Adv. Manuf. Technol. 42(1–2), 118–125 (2009)
R. Dinesh Kumar, S. Elangovan, N. Siva Shanmugam, Parametric optimisation of pulsed—tig welding process in butt joining of 304 l austenitic stainless steel sheets. Int. J. Res. Eng. Technol. 03(11), 213–219 (2014)
C. Prabaharan, P. Venkatachalam, K. Suresh Kumar, K. Lenin, Parametric optimization of gas tungsten arc welding process by using factorial design approach. J. Sci. Ind. Res. 73, 415–420 (2014)
N.S. Patel, P.B. Rahul, A review on parametric optimization of tig welding. Int. J. Comput. Eng. Res. 4(1), 27–31 (2014)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Singh, R., Slathia, R.S. Effect of Cryogenic Treatment on Sensitization of 304 Stainless Steel in TIG Welding. J. Inst. Eng. India Ser. C 97, 127–130 (2016). https://doi.org/10.1007/s40032-015-0214-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40032-015-0214-9