Indian Welding Journal

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Corrosion Behaviour of 316 Austenitic Stainless Steel Cladding on Copper Coated Low Alloy Steel by Gas Metal Arc Welding


Affiliations
1 Department of Mechanical Engineering, Engineering Institute for Junior Executives, Howrah 711104, West Bengal, India
2 Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani- 741235, Nadia, West Bengal, India
3 Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur - 711201, West Bengal, India
     

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Cladding has developed growing interest among engineers for providing greater corrosion resistance and erosion resistance of the surface of low grade steel components in aggressive environments. Austenitic stainless steel yields satisfactory results as a clad material and successfully used for last few decades. Among different techniques producing quality clad parts, gas metal arc welding is a popular method for cladding due to its simplicity and cost effectiveness. Corrosion resistance of the clad part depends on different microstructural phases as well as alloying elements present in clad layer. Copper, one of the austenising alloying elements, is used to increase corrosion resistance in steel especially in sulphuric acid atmosphere. In the present investigation, austenitic stainless steel (316) is clad by means of gas metal arc welding (GMAW) on copper coated E250 low alloy steel using 100% CO2 as shielding gas. Copper coating is done on low alloy steel by electroplating process. Single layer cladding is done keeping 50% overlap. Process parameters of GMAW like welding current and troch travel speed are varied in three levels, keeping welding voltage constant. Heat input varies accordingly. Corrosion tests are carried out in three different media (ferric chloride, copper chloride and sulphuric acid solutions). Experimental results show that copper addition improves corrosion resistance to a great extent in sulphate atmosphere, moderately in ferric chloride and the least in case of copper chloride atmosphere. The corrosion rate decreases at higher heat input on the whole. In every case, the cladding exhibits much better corrosion resistance than the base metal.

Keywords

Cladding, GMAW, Copper Coating, Corrosion Resistance, Buttering Layer.
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  • Saha MK and Das S (2016); A review on different cladding techniques employed to resist corrosion, Journal of the Association of Engineers, India, 86(1-2), pp. 51-64.

  • Saha MK, Mondal A, Hazra R and Das S (2016); On the variation of the hardness of duplex stainless steel clad layer deposited by flux-cored arc welding, Reason- A Technical Journal, 15, pp.1-6.

  • Saha MK, Mondal J, Mondal A and Das S (2017); Influence of heat input on corrosion resistance of duplex stainless steel cladding using flux-cored arc welding on low alloy steel, Indian Welding Journal, 51(3), pp.66-72.

  • Chakraborty B, Das H, Das S and Pal TK (2013); Effect of process parameters on clad quality of duplex stainless steel using GMAW process, Transaction of the Indian Institute of Metals, 66(3), pp.221-230.

  • Mondal A, Saha MK, Hazra R and Das S (2015); Influence of heat input on weld bead geometry using duplex stainless steel wire electrode on low alloy steel specimens, Cogent Engineering, 3(1), pp. 1-14.

  • Davis JR, Davis & Associates, Stainless steel cladding and weld overlay, ASM Specialty Handbook: Stainless Steels, 06398G, 1994 extracted on 31.10.2015.

  • Verma AK, Biswas BC, Roy P, De S, Saren S and Das S (2013) Exploring quality of austenitic stainless steel clad layer obtained by metal active gas welding, Indian Science Cruiser, 27(4), pp.24-29.

  • The effects of alloying elements, Outokumpu, 2016, extracted from http://www.outokumpu.com/en/

  • products-properties/more-stainless/the-effects-ofalloyingelements%E2%80%8B/pages/ default.aspx

  • Shen Z, Chen Y, Haghshenas M, Nguyen T, Galloway J and Gerlich AP (2015); Interfacial microstructure and properties of copper clad steel produced using friction stir welding versus gas metal arc welding, Materials Characterization, 104, pp. 1–9.

  • Jiangnan Y, Lichang W and Wenhao S (1992); The effect of copper on the anodic dissolution behaviour of austenitic stainless steel in acidic chloride solution, Corrosion Science, 33(6), pp. 851-859.

  • Savage WF, Nippes EP and Mushala MC (1978); Coppercontamination cracking in weld heat affected zone, Welding Journal, 5, pp. 145-152.

  • Banas J and Mazurkiewicz A (2000); The effect of copper on passivity and corrosion behaviour of ferritic and ferritic–austenitic stainless steels, Materials Science and Engineering A, 277, pp. 183–191.

  • Chen W, Wu Y and Shen J (2004); Effect of copper and bronze addition on corrosion resistance of alloyed 316L stainless steel cladded on plain carbon steel by powder metallurgy, Journal of Material Science & Technology, 20(2), pp. 217-220.

  • Tomio A, Sagara M, Doi T, Amaya H, Otsuka N and Kudo T (2014); Role of alloyed copper on corrosion resistance of austenitic stainless steel in H2S–Cl environment, Corrosion Science, 81, pp. 144–151.

  • Lee J, Kim S, Lee I, Kim G, Kim J and Park Y (2012); Effect of copper addition on the active corrosion behavior of hyper duplex stainless steels in sulfuric acid, Materials Transactions, 53(6), pp. 1048 -1055.


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  • Corrosion Behaviour of 316 Austenitic Stainless Steel Cladding on Copper Coated Low Alloy Steel by Gas Metal Arc Welding

Abstract Views: 455  |  PDF Views: 4

Authors

Manas Kumar Saha
Department of Mechanical Engineering, Engineering Institute for Junior Executives, Howrah 711104, West Bengal, India
Santanu Das
Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani- 741235, Nadia, West Bengal, India
Gouranga Lal Datta
Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur - 711201, West Bengal, India

Abstract


Cladding has developed growing interest among engineers for providing greater corrosion resistance and erosion resistance of the surface of low grade steel components in aggressive environments. Austenitic stainless steel yields satisfactory results as a clad material and successfully used for last few decades. Among different techniques producing quality clad parts, gas metal arc welding is a popular method for cladding due to its simplicity and cost effectiveness. Corrosion resistance of the clad part depends on different microstructural phases as well as alloying elements present in clad layer. Copper, one of the austenising alloying elements, is used to increase corrosion resistance in steel especially in sulphuric acid atmosphere. In the present investigation, austenitic stainless steel (316) is clad by means of gas metal arc welding (GMAW) on copper coated E250 low alloy steel using 100% CO2 as shielding gas. Copper coating is done on low alloy steel by electroplating process. Single layer cladding is done keeping 50% overlap. Process parameters of GMAW like welding current and troch travel speed are varied in three levels, keeping welding voltage constant. Heat input varies accordingly. Corrosion tests are carried out in three different media (ferric chloride, copper chloride and sulphuric acid solutions). Experimental results show that copper addition improves corrosion resistance to a great extent in sulphate atmosphere, moderately in ferric chloride and the least in case of copper chloride atmosphere. The corrosion rate decreases at higher heat input on the whole. In every case, the cladding exhibits much better corrosion resistance than the base metal.

Keywords


Cladding, GMAW, Copper Coating, Corrosion Resistance, Buttering Layer.

References





DOI: https://doi.org/10.22486/iwj%2F2018%2Fv51%2Fi4%2F176795