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Combined Effect of Base Metal Dilution and Thermal Aging Conditions on the Corrosion Performance of Stainless Steel Claddings


  • Department of Mechanical Engineering, SLIET Longowal, Sangrur - 148106, Punjab, India


Objectives: Present work investigates the effects of base metal dilution and the thermal aging treatment on corrosion performance and strength of stainless steel claddings, fabricated by gas metal arc welding process. Methods/Statistical Analysis: Austenitic stainless steel AISI SS 316L was selected as the cladding material and low carbon steel as substrate for the present study. Experimental conditions were selected to achieve a varying degree of dilution of the deposit. Thermal aging treatment was given to specimens at 700ºC for 2 hours, 4 hours and 20 hours. The specimens were subjected to Double Loop Electrochemical Potentio Kinetic Reactivation (DLEPR), boiling nitric acid, and microhardness testing. Findings: Microhardness results of the clad deposits showed a continuous decrease in values from top of clad deposit to the base metal. However there is almost constant values of microhardness observed when it was measured along the clad deposit. Moreover the deposits with high dilution showed low microhardness values than that of low dilution clad beads. The low dilution clad deposits also performed better on testing the corrosion rate and degree of sensitization as compared to high dilution deposits. Corrosion rate measured from boiling nitric acid test showed a significant growth with increase of thermal aging time due to carbide precipitation. The corrosion rate of specimens in the as clad condition was as low as 0.19 mm/month which increased to 3.64 mm/month when sensitized for 20 hours at 700ºC. Degree of sensitization (DOS) calculated by DLEPR test is more significantly affected by the thermal aging treatment. The DOS values varied from as low as 2.47 % to high as 31% for as clad and sensitized conditions respectively. Application/Improvements: The present study can beneficially be adopted for weld overlay fabrications as it suggests the processing conditions to forecast the adequate strength and corrosion performance of components in similar service conditions.


Corrosion Rate, Dilution, Degree of Sensitization, Microhardness, Thermal Aging.

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  • Sahin M. Welding of stainless steels and other joining methods. A designer handbook series. Committee of stainless steel publications. 1979; 28(7):2244–50.
  • Murugan N, Parmar RS. Stainless steel cladding deposited by automatic gas metal arc welding, supplement to the welding journal. American Welding Society and the Welding Research Council. 2012; 2(2):1–5.
  • Majumdar DJ, Pinkerton A, Liu Z, Manna I, Li L. Mechanical and electrochemical properties of multiple-layer diode laser cladding of 316L stainless steel. Applied Surface Science, Elsevier. 2005; 247(1-4):373–77.
  • Aydogdu GH, Aydinol MK. Determination of susceptibility to inter granular corrosion and electrochemical reactivation behaviour of AISI 316L type stainless steel. Corrosion Science Science Direct. 2006; 48(11):3565–83.
  • Slaughter GM, Housley TR. The welding of ferritic steels to austenitic stainless steels. 2005; 160(2):128–37.
  • Basic Understanding of Weld Corrosion. ASM International. Corrosion of weldments. Available from:, Date accessed: 2006.
  • Shahi AS, Pandey P. Modelling of the effects of welding conditions on dilution of stainless steel claddings produced by gas metal arc welding procedures. Journal of Materials Processing Technology, Elsevier. 2007; 196(1-3):339–44.
  • Yu X, Chen S, Wang L. Effect of solution treatment conditions on the sensitization of austenitic stainless steel. J Serb Chem Soc. 2009; 74(11):1293–302.
  • Parvathavarthini N, Dayal RK. Sensitization and intergranular corrosion. Corrosion Reviews Special Issue. Special Supplement. 2009; 27:113–46.
  • Atanda P, Fatudimu A, Oluwole O. Sensitisation Study of Normalized 316L Stainless Steel. Journal of Minerals and Materials Characterization and Engineering. 2010; 9(1):13–23.
  • Rao VN, Reddy MG, Nagarjuna S. Weld overlay cladding of high strength low alloy steel with austenitic stainless steel – Structure and properties. Materials and Design. Elsevier. 2011 Nov; 32(4):2496–506.
  • Shafy M. Effect of low temperature aging of type 316l austenitic stainless weld metal on transformation of ferrite phase. Egypt J Solids. 2006; 29(1):151–62.
  • Elango P, Balaguru S. Welding Parameters for Inconel Overlay on Carbon Steel using GMAW. Indian Journal of Science and Technology. 2015 Nov; 8(31):1–5.
  • ASTM A-262 Practice-C and ASTM G-108, Standard practices for detecting susceptibility to intergranular attack in austenitic stainless steels, Annual book of ASTM standards ASTM International. Available from:, Date accessed: 2011.
  • ASTM E 384, Standard test method for knoop and vickers hardness of materials, Annual book of ASTM standard. Available from:, Date accessed: 2011.


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