Effect of welding processes on ferrite content, microstructure and mechanical properties of super duplex stainless steel 2507 welds
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Chandragiri Baskar Sekar
Chandragiri Baskar Sekar born in 1978 completed his ME Engg. in Government College of Technology Coimbatore, Anna University, Tamil Nadu, India. At present, he is working as Assistant Professor in the Department of Mechanical engineering, Tagore Engineering College Chennai. He is pursuing his PhD in the Faculty of Mechanical Engineering at Anna University, Chennai under the guidance of Prof. S. Rajendra Boopathy and Prof. S. R. Koteswara Rao.
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Sajja Rama Koteswara Rao
Professor Sajja Rama Koteswara Rao, born in 1966, received his PhD in Metallurgical and Materials Engineering from IIT Madras, Chennai, India in 2005. He has published more than 25 publications in international journals so far. Presently, he is Professor of Mechanical Engineering, SSN College of Engineering, Chennai, India.
Professor Sundaravel Vijayan, born in 1975, received his PhD in Industrial Engineering Department from Anna University, Chennai, India. He has around 16 years of professional experience in teaching, industry and research. Presently, he is working as Professor in the Department of Mechanical Engineering, SSN College of Engineering, Chennai, India.
Professor Sadayan Rajendra Boopathy, born in 1961, received his PhD in Mechanical Department from Anna University, Chennai, India in 2002. Presently, he is a retired Professor in the Department of Mechanical Engineering, Anna University, Chennai, India.
Abstract
Super duplex stainless steel (SDSS) plates of 6 mm thickness have been welded using tungsten inert gas, activated tungsten inert gas, electron beam welding and friction stir welding processes. Among these, in the first two, melting and solidification of material occurs slowly whereas, it is faster in electron beam welding process and no melting occurs in friction stir welding. Macro and microstructural studies, hardness surveys, tensile tests and percentage of ferrite content were compared for all the welds. The ferrite–austenite phase balance is 50 % each, with electron beam weld metal at about 65 % ferrite. This showed the hardness of the weld metal and heat affected zones to be higher than base metal. The weldment joint efficiencies are more than 90 %. The fracture location is found to be in the weld metal for tungsten inert gas and activated tungsten inert gas weld, in the nugget for friction stir welds and in the base metal for electron beam welds. The ductility of electron beam weld joints is 32 % while it is around 20 % for the others. The preferred order while choosing the welding process should be activated tungsten inert gas welding, tungsten inert gas welding, electron beam welding, and friction stir welding.
About the authors
Chandragiri Baskar Sekar born in 1978 completed his ME Engg. in Government College of Technology Coimbatore, Anna University, Tamil Nadu, India. At present, he is working as Assistant Professor in the Department of Mechanical engineering, Tagore Engineering College Chennai. He is pursuing his PhD in the Faculty of Mechanical Engineering at Anna University, Chennai under the guidance of Prof. S. Rajendra Boopathy and Prof. S. R. Koteswara Rao.
Professor Sajja Rama Koteswara Rao, born in 1966, received his PhD in Metallurgical and Materials Engineering from IIT Madras, Chennai, India in 2005. He has published more than 25 publications in international journals so far. Presently, he is Professor of Mechanical Engineering, SSN College of Engineering, Chennai, India.
Professor Sundaravel Vijayan, born in 1975, received his PhD in Industrial Engineering Department from Anna University, Chennai, India. He has around 16 years of professional experience in teaching, industry and research. Presently, he is working as Professor in the Department of Mechanical Engineering, SSN College of Engineering, Chennai, India.
Professor Sadayan Rajendra Boopathy, born in 1961, received his PhD in Mechanical Department from Anna University, Chennai, India in 2002. Presently, he is a retired Professor in the Department of Mechanical Engineering, Anna University, Chennai, India.
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
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Articles in the same Issue
- Frontmatter
- Effects of shear deformation on grain size and mechanical properties of the forged B4Cp/Al composite
- A novel method for measurements of surface topography in previously inaccessible areas
- Optimum design of a seat bracket using artificial neural networks and dandelion optimization algorithm
- Comparison between laser and TIG welding of electron beam melted Ti6Al4V parts
- Influence of heat input on temperature and stress field of X80 steel pipeline cirumferential weld using type-B sleeve repairing
- Experimental investigation of mechanical properties of PLA, ABS, and PETG 3-d printing materials using fused deposition modeling technique
- Preparation, characterization, and antimicrobial activity of novel chitosan blended almond gum–nanosilica bionanocomposite film for food packaging applications
- A novel hybrid Fick’s law algorithm-quasi oppositional–based learning algorithm for solving constrained mechanical design problems
- Tensile, bending, and impact properties of laminated carbon/aramid/glass hybrid fiber composites
- Effect of welding processes on ferrite content, microstructure and mechanical properties of super duplex stainless steel 2507 welds
- Wear and residual stress in high-feed milling of AISI H13 tool steel
- Optimum design of a composite drone component using slime mold algorithm
- Lateral compression behavior of expanded polypropylene foam–filled carbon and glass fiber composite tubes
- Effect of red mud on mechanical and thermal properties of agave sisalana/glass fiber–reinforced hybrid composites
- Mechanical analysis of composite plates adhesively joined with different single-lap techniques under bending loading
