B.Tech in mechanical Engineering from BIET, Suri
M.Tech in Manufacturing Technology from NITTTR, Kolkata
Ph.D. in Mechanical Engineering from IIT Guwahati
A Metallurgical Study of Micro Plasma Arc Welded Joint of Austenitic Stainless-steel Blank V. Haldar, S. Pal Archives of Metallurgy and Materials, 2024 Micro plasma arc welding (MPAW) is frequently used for joining thin sheets of ferrous and nonferrous materials. In this study, austenitic stainless steel 316L of 0.5 mm thin sheets are joined by using MPAW. The weld metallurgy is characterized by field electron scanning microscopy (FESEM), Transmission electron microscopy (TEM), and X-ray diffraction (XRD) techniques to evaluate different phases formation and their orientation in detail. Mechanical tests like tensile test, micro hardness test is also carried out to measure the joint quality. It is found that the weld joint is constituent of two major phases, δ-ferrite and austenite (γ), and few secondary phases like chromium carbides. The ferrite percentage in the fusion zone is higher than the as received base material. The fusion zone hardness is increased due to the presence of high amount of ferrite and carbides. The tensile fracture surface contains lots of dimples and voids, which indicates good ductility of the joint. A defect free and good joint efficiency is achieved by using MPAW.
Characterization of mechanical behavior in solution-treated micro plasma arc welded blanks of Inconel 625 V Haldar, S Pal Metals and Materials International 31 (6), 1769-1792 , 2025 2025 Citations: 6
Impact of weld time and solution treatment on the performance of IN625 spot joints: An experimental study S Dwibedi, V Haldar Journal of The Institution of Engineers (India): Series D, 1-9 , 2024 2024 Citations: 4
Influence of fusion zone metallurgy on the mechanical behavior of Ni-based superalloy and austenitic stainless steel dissimilar joint V Haldar, S Pal Journal of Materials Engineering and Performance 33 (12), 5735-5753 , 2024 2024 Citations: 19
Influence of Weld Time on Joint Behavior of IN625-SS316L Weldments V Haldar, S Dwibedi, S Jhavar International Conference on Futuristic Advancements in Materials … , 2024 2024 Citations: 1
A Metallurgical Study of Micro Plasma Arc Welded Joint of Austenitic Stainless-steel Blank V Haldar, S Pal Archives of Metallurgy and Materials 69 (3), 1071-1078 , 2024 2024
Formability study of micro-plasma arc-welded AISI 316L stainless steel thin sheet joint V Haldar, SK Biswal, S Pal Journal of the Brazilian Society of Mechanical Sciences and Engineering 44 … , 2022 2022 Citations: 11
Effect of the rolling direction on the mechanical and microstructural properties of AISI 316L stainless steel welded joint V Haldar, S Pal Recent Advances in Manufacturing Processes and Systems: Select Proceedings … , 2022 2022 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
Influence of fusion zone metallurgy on the mechanical behavior of Ni-based superalloy and austenitic stainless steel dissimilar joint V Haldar, S Pal Journal of Materials Engineering and Performance 33 (12), 5735-5753 , 2024 2024 Citations: 19
Formability study of micro-plasma arc-welded AISI 316L stainless steel thin sheet joint V Haldar, SK Biswal, S Pal Journal of the Brazilian Society of Mechanical Sciences and Engineering 44 … , 2022 2022 Citations: 11
Characterization of mechanical behavior in solution-treated micro plasma arc welded blanks of Inconel 625 V Haldar, S Pal Metals and Materials International 31 (6), 1769-1792 , 2025 2025 Citations: 6
Impact of weld time and solution treatment on the performance of IN625 spot joints: An experimental study S Dwibedi, V Haldar Journal of The Institution of Engineers (India): Series D, 1-9 , 2024 2024 Citations: 4
Effect of the rolling direction on the mechanical and microstructural properties of AISI 316L stainless steel welded joint V Haldar, S Pal Recent Advances in Manufacturing Processes and Systems: Select Proceedings … , 2022 2022 Citations: 3
Influence of Weld Time on Joint Behavior of IN625-SS316L Weldments V Haldar, S Dwibedi, S Jhavar International Conference on Futuristic Advancements in Materials … , 2024 2024 Citations: 1
A Metallurgical Study of Micro Plasma Arc Welded Joint of Austenitic Stainless-steel Blank V Haldar, S Pal Archives of Metallurgy and Materials 69 (3), 1071-1078 , 2024 2024
