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Kannan, T.
- Effect of Heat Input on Intergranular Corrosion Resistance of Duplex Stainless Steel Clad Metals
Authors
1 SVS College of Engineering, Coimbatore - 642 109, Tamil Nadu, IN
2 Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore - 641 014, Tamil Nadu, IN
3 Mechanical Engineering, SVS College of Engineering, Coimbatore- 642 109, Tamil Nadu, IN
Source
Indian Welding Journal, Vol 48, No 3 (2015), Pagination: 46-58Abstract
Cladding is a process of depositing a thick layer of a metal surface to a carbon steel or low alloy steel base metal for the purpose of providing a corrosion-resistant surface when that surface is to be exposed to a corrosive environment. Clad metals are more prone to corrosion attacks as compared to base metals because they are compositionally and microstructurally in homogeneous. Claddings require a proper evaluation of their corrosion resistance in order to ensure that they are suitable for the desired applications. This paper focuses on an experimental study of duplex stainless steel cladding of low carbon structural steel deposited by flux cored arc welding process. In this research work, double-loop electrochemical potentiokinetic reactivation technique was employed to evaluate the intergranular corrosion resistance of the claddings. The effect of heat input on intergranular corrosion resistance is presented in graphical forms, which are very useful to control the corrosion resistance of the claddings.Keywords
Duplex Stainless Steel, Cladding, Flux Cored arc Welding, Intergranular Corrosion Resistance, Heat Input.
- Development of Mathematical Models to Predict Clad Bead Geometry Deposited by GMAW In Stainless Steel Cladding
Authors
1 Department of Mechanical Engineering, Kumaraguru College of Technology, Coimbatore 641 006, Tamil Nadu, IN
Source
Indian Welding Journal, Vol 42, No 1 (2009), Pagination: 47-51Abstract
Weld Cladding is a process of depositing a thick layer of corrosion resistance material over carbon steel plate. The main problem faced in stainless steel cladding is the selection of optimum process parameters for achieving the required clad bead geometry. This paper highlights an experimental study carried out to develop mathematical models to predict clad bead geometry in Gas Metal Arc Welding (GMAW) process used in austenitic stainless steel cladding of low carbon structural steel plates. The experiments were conducted based on four-factor five level central composite rotatable design with full replications technique. The mathematical models was developed using multiple regression method.
Keywords
GMAW, Mathematical Model, Cladding, Austenitic Stainless Steel.- Optimization of FCAW Process Parameters using A Non-Traditional Technique
Authors
1 Department of Mechanical Engineering, Kumaraguru College of Technology, Coimbatore-641006, Tamil Nadu, IN
2 Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore-641014, Tamil Nadu, IN
Source
Indian Welding Journal, Vol 41, No 3 (2008), Pagination: 32-36Abstract
Weld cladding is a process of depositing a thick layer of metal surface to a carbon steel base metal for the purpose of providing a corrosion resistant surface when that surface is to be exposed to a corrosive environment. In cladding process, most of the engineers often face the problem of selecting optimum combination of input process parameters for achieving the required clad quality. This problem can be solved by using Genetic Algorithm (GA) technique to optimize the process parameters to achieve minimum dilution and penetration, maximum bead width and reinforcement. This paper focuses on an optimization of input process parameters in duplex stainless steel cladding of low carbon structural steel plates deposited by Flux Cored Arc Welding (FCAW).
Keywords
Optimization, FCAW, Genetic Algorithm, Duplex Stainless Steel, MATLAB.- Effect of Welding Process Parameters on Microstructures of Duplex Stainless Steel Clad Metals Deposited by FCAW
Authors
1 Mech. Engg., Kumaraguru College of Tech., Coimbatore, IN
2 Mech. Engg., Coimbatore Institute of Tech., Coimbatore, Tamil Nadu, IN
Source
Indian Welding Journal, Vol 40, No 4 (2007), Pagination: 17-20Abstract
Weld cladding is a process of depositing a thick layer of a metal surface to a carbon steel base metal for the purpose of providing a corrosion-resistant surface when that surface is to be exposed to a corrosive environment. In order to maintain the required corrosion resistance and mechanical properties of the claddings, controlling the microstructure is essential. This paper focuses on an experimental study of duplex stainless steel cladding of low carbon structural steel deposited by flux cored arc welding process. Colour metallographic technique was used to study the microstructure of the clad layer cladded under two different heat input conditions with the help of optical microscope.
Keywords
Heat Input, Duplex Stainless Steel, FCAW, Cladding.- Effect of Welding Parameters on Pitting Resistance Equivalent Number of Duplex Stainless Steel Clad Metals
Authors
1 Mechanical Engineering, Kumaraguru College of Technology, Coimbatore-641006, IN
2 Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore-641014, IN
Source
Indian Welding Journal, Vol 39, No 3 (2006), Pagination: 18-23Abstract
Resistance to pitting corrosion is commonly expressed by Pitting Resistance Equivalent Number (PREN). During duplex stainless steel weld cladding, pitting resistance balance is disturbed by the formation of intermetallic precipitates, or by excessive precipitation of secondary austenite in surface regions. Redistribution of alloying elements as a result of such transformations may lead to local reductions in pitting resistance. Hence, control of PREN is very important to maintain the required pitting resistance. This paper highlights an experimental study and analysis of various welding parameters influencing PREN in duplex stainless steel cladding deposited by Flux Cored Arc Welding (FCAW). The experiments were conducted based on four-factor five level central composite rotatable design and a mathematical model was developed to predict PREN. The effects of welding parameters on PREN have been presented in graphical form, which helps in selecting appropriate welding parameters to obtain the desired PREN quickly.
Resistance to pitting corrosion is commonly expressed by Pitting Resistance Equivalent Number (PREN). During duplex stainless steel weld cladding, pitting resistance balance is disturbed by the formation of intermetallic precipitates, or by excessive precipitation of secondary austenite in surface regions. Redistribution of alloying elements as a result of such transformations may lead to local reductions in pitting resistance. Hence, control of PREN is very important to maintain the required pitting resistance. This paper highlights an experimental study and analysis of various welding parameters in flu e n c in g PREN in d u p le x stainless steel cladding deposited by Flux Cored Arc Welding (FCAW). The experiments were conducted based on four-factor five level central composite rotatable design and a mathematical model was developed to predict PREN. The effects of welding parameters on PREN have been presented in graphical form, which helps in selecting appropriate welding parameters to obtain the desired PREN quickly.