Welding, Material Characterization, Material Testing, Manufacturing
FUTURE PROJECTS
To study the microstructure and mechanical properties for dissimilar welded joint by using under water welding
Applications Invited
67
Scopus Publications
1447
Scholar Citations
24
Scholar h-index
37
Scholar i10-index
Scopus Publications
Autogenous laser welded joint of Inconel 625 and AISI 316L steel: Microstructure and mechanical properties Lakkimsetti Yasho Narayan, Chinika Dangi, H Natu, Sachin Sirohi, Shailesh M Pandey, Chandan Pandey Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2026 The study focused on a dissimilar laser-welded joint between heat-resistant AISI 316L stainless steel and Inconel 625. It included optical and scanning electron microscopy (SEM) analysis of the weld metal, heat affected zone, and fusion interface, along with microhardness measurements, Charpy impact toughness tests, and tensile property evaluations at room and elevated temperatures. Microstructural examination revealed an asymmetric solidification behavior across the weld metal of the dissimilar welded joint. On AISI 316L side, weld metal near the fusion boundary predominantly exhibited cellular and columnar solidification structure. In contrast, Inconel 625 side showed the formation of columnar dendritic structures, indicating directional solidification driven by thermal gradients and compositional differences between the base metals. Within the inter-dendritic regions and along cellular grain boundaries of the weld metal, the precipitation of Laves phases and NbC was evident in various morphologies including spherical, chain-like, and rectangular, suggesting non-equilibrium segregation during rapid solidification. The tensile strength of the dissimilar weld metal was significantly lower than that of Inconel 625 base metals and close to AISI 316L steel base metal, with an average ultimate tensile strength of 600 MPa and elongation of 46%. The tensile strength of the welded joint was measured to be 336 MPa at 650 °C and 280 MPa at 700 °C. Similarly, Charpy impact testing at room temperature revealed lower energy absorption in weld metal compared to the base metals, with an average toughness value of 72 J.
Global perspective of sustainable additive manufacturing in dentistry: Properties and applications Ankit Tyagi, Upender Punia, Sachin Sirohi, Hargovind Soni Journal of Micromanufacturing, 2026 Technological developments in dentistry have increased diagnosis precision, facilitated treatment administration, and shortened chair times, enabling dentists to handle patients more successfully. A dentist may now see, precisely measure, gather data, and fabricate prototypes of both soft and hard tissue thanks to 3D printing. It has become feasible by using rapid prototyping techniques, including filament, resin, and metal-based 3D printing. Every technology has unique benefits when it comes to producing a certain kind of product. The most often utilised technologies in dentistry are Vat polymerisation-based systems. Using three-dimensional printing in different methods of treatment might be beneficial. The applications in the dental sector comprise crowns, bridges, occlusal splints, retainers, implants, drill guides, and other oral restorations. This study offers a structured and sustainability-focused framework for comprehending the current status and future prospects of additive manufacturing (AM) in dentistry, facilitating its transition towards trustworthy and environmentally responsible clinical application. Statement of novelty and statement of industrial relevance This review presents an updated analysis of dental AM based on recent literature, with a specific focus on sustainability-driven evaluation. A critical comparison of major techniques (SLA, DLP, FDM and SLM) is provided in terms of accuracy, surface quality, biocompatibility, mechanical reliability, clinical acceptance, and environmental impact. There is a discussion of new trends like micro-scale fabrication, nano-reinforced dental resins, chairside manufacturing, and fully digital workflows. From an industrial point of view, the review gives useful information about dental applications like crowns, bridges, occlusal splints, retainers, implants, drill guides, and other oral restorations.
Dissimilar welding of inconel alloys with austenitic stainless steel: microstructure and mechanical behavior MZ Saifi, S Sirohi Welding International, 1-15 , 2026 2026
Autogenous laser welded joint of Inconel 625 and AISI 316L steel: Microstructure and mechanical properties LY Narayan, C Dangi, H Natu, S Sirohi, SM Pandey, C Pandey Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2026 2026 Citations: 4
Role of the buttering layer in microstructural and mechanical characteristics of dissimilar IN617-AISI 304 H welded joints fabricated by multi-pass GTAW A Garga, S Sirohi, D Fydrych, C Pandey The International Journal of Advanced Manufacturing Technology, 1-31 , 2026 2026
High-temperature rupture behaviour of the laser welded P22 steel weldments S Sirohi, S Kumar, A Kumar, P Kumar, C Pandey Welding International, 1-11 , 2026 2026
Understanding creep rupture and fracture mechanisms in P92/304L dissimilar joints M Maheshwari, K Guguloth, G Dak, J Joshi, A Yadav, A Zala, S Sirohi, ... Journal of Materials Engineering and Performance 35 (16), 15790-15815 , 2026 2026 Citations: 2
Special Issue on Advances in Dissimilar Welding: Integrating Computational Techniques for Enhanced Joint Performance C Pandey, S Sirohi, D Fydrych, SM Pandey Journal of Materials Engineering and Performance 35 (12), 11407-11408 , 2026 2026
Basicity as a descriptor for catalyst performance: a promoter study for syngas production via autothermal reforming of methane with CO₂ AG Bhavani, SK Tripathy, S Sirohi, NS Reddy Clean Technologies and Environmental Policy 28 (3), 79 , 2026 2026
Role of nitrogen in shielding gas on slurry erosion performance of duplex steel weld beads deposited on nitrogen-alloyed austenitic steel N Kumar, A Das, N Arora, S Sirohi Journal of Materials Engineering and Performance 35 (12), 12156-12166 , 2026 2026 Citations: 1
Microstructural and mechanical investigation of dissimilar U-groove weld of IN 718/ASS 304L employing ERNiCr-3 filler N Kumar, P Kumar, S Sirohi, SM Pandey, C Pandey Journal of Adhesion Science and Technology 40 (3), 650-667 , 2026 2026 Citations: 6
Effects of welding parameter on the microstructure and mechanical properties of friction stir-welded non-heat treatable alloy AA5083 R Saravanakumar, T Rajasekaran, SM Pandey, S Sirohi, C Pandey Journal of Adhesion Science and Technology 40 (3), 631-649 , 2026 2026 Citations: 9
Comparative Evaluation of Ni-Based Electrodes for Shielded Metal Arc Dissimilar Welding of P91 and AISI 310 Steels: Microstructure and Mechanical Performance R Kumar, S Sirohi Journal of Materials Engineering and Performance 35 (3), 2390-2418 , 2026 2026 Citations: 2
Enhancing Mechanical Performance of 5052 Aluminum Alloy through Low-Frequency Vibration-Assisted Tungsten Inert Gas Welding S Kumar, R Ranjan, M Kumar, S Sirohi Journal of Materials Engineering and Performance, 1-14 , 2025 2025 Citations: 1
Microstructure and Mechanical Behavior Study of the GTAW Joint of AISI 310 and Modified 9Cr-1Mo (P91) Steel R Kumar, S Sirohi Journal of Materials Engineering and Performance 34 (19), 22266-22284 , 2025 2025 Citations: 6
Microstructure anomaly due to the heat from the laser welding process and its effect on the mechanical behavior of the dissimilar welded joint between P92 steel and Inconel 625 … LY Narayan, V Bhanu, S Sirohi, S Kumar, D Fydrych, C Pandey The International Journal of Advanced Manufacturing Technology 140 (3), 2129 … , 2025 2025 Citations: 6
Study on the effect of varying cooling conditions on microstructural and mechanical performance of the GTAW joint of heat-resistant P92 Steel A Kumar, K Gupta, P Tiwari, CS Tyagi, S Sirohi, C Pandey Journal of Materials Engineering and Performance 34 (17), 19792-19812 , 2025 2025 Citations: 3
Pulsed current GTAW Inconel 625/AISI 304 L steel dissimilar joint: Microstructure and mechanical properties A Kumar, A Singhal, S Sirohi, D Fydrych, C Pandey Journal of Constructional Steel Research 231, 109602 , 2025 2025 Citations: 29
Creep and high-temperature tensile deformation behavior of the TIG welded P92/304L dissimilar steel weld joints G Dak, K Guguloth, S Sirohi, MŞ Adin, C Pandey Journal of Materials Engineering and Performance 34 (11), 10659-10684 , 2025 2025 Citations: 58
Microstructure degradation and creep failure study of the dissimilar metal welded joint of heat-resistant steel and Inconel 617 alloy tested at 650° C and applied stress range … A Kumar, K Guguloth, SM Pandey, S Sirohi, A Świerczyńska, D Fydrych, ... International Journal of Pressure Vessels and Piping 214, 105370 , 2025 2025 Citations: 22
Pulsed GTAW joint of P92 steel and Inconel 625: microstructure and mechanical properties S Sirohi, A Kumar, M Singh, D Fydrych, C Pandey Archives of Civil and Mechanical Engineering 25 (2), 93 , 2025 2025 Citations: 12
Laser welding on 10 mm thick grade 92 steel for USC applications: microstructure and mechanical properties D Moulali, A Kumar, K Guguloth, S Sirohi, CS Tyagi, H Natu, C Pandey Archives of Civil and Mechanical Engineering 25 (2), 90 , 2025 2025 Citations: 8
MOST CITED SCHOLAR PUBLICATIONS
Study on microstructure and mechanical behavior relationship for laser-welded dissimilar joint of P92 martensitic and 304L austenitic steel G Dak, S Sirohi, C Pandey International Journal of Pressure Vessels and Piping 196, 104629 , 2022 2022 Citations: 102
Effect of post weld heat treatments on microstructure evolution and type IV cracking behavior of the P91 steel welds joint C Pandey, MM Mahapatra, P Kumar, S Kumar, S Sirohi Journal of Materials Processing Technology 266, 140-154 , 2019 2019 Citations: 102
Study on microstructural characterization, mechanical properties and residual stress of gtaw dissimilar joints of p91 and p22 steels A Sauraw, AK Sharma, D Fydrych, S Sirohi, A Gupta, A Świerczyńska, ... Materials 14 (21), 6591 , 2021 2021 Citations: 80
Role of the Ni-based filler (IN625) and heat-treatment on the mechanical performance of the GTA welded dissimilar joint of P91 and SS304H steel S Sirohi, C Pandey, A Goyal Journal of Manufacturing Processes 65, 174-189 , 2021 2021 Citations: 77
Study on evaluation of through-thickness residual stresses and microstructure-mechanical property relation for dissimilar welded joint of modified 9Cr–1Mo and SS304H steel S Sirohi, PK Taraphdar, G Dak, C Pandey, SK Sharma, A Goyal International Journal of Pressure Vessels and Piping 194, 104557 , 2021 2021 Citations: 76
Investigation of the microstructure and mechanical properties of the laser welded joint of P22 and P91 steel S Sirohi, A Gupta, C Pandey, RS Vidyarthy, K Guguloth, H Natu Optics & Laser Technology 147, 107610 , 2022 2022 Citations: 69
Microstructure and mechanical properties of combined GTAW and SMAW dissimilar welded joints between Inconel 718 and 304L austenitic stainless steel S Sirohi, SM Pandey, A Świerczyńska, G Rogalski, N Kumar, ... Metals 13 (1), 14 , 2022 2022 Citations: 65
Creep and high-temperature tensile deformation behavior of the TIG welded P92/304L dissimilar steel weld joints G Dak, K Guguloth, S Sirohi, MŞ Adin, C Pandey Journal of Materials Engineering and Performance 34 (11), 10659-10684 , 2025 2025 Citations: 58
Microstructure and mechanical behaviour study of the dissimilar weldment of ‘IN82 buttered’P92 steel and AISI 304L steel for ultra super critical power plants G Dak, V Singh, A Kumar, S Sirohi, A Bhattacharyya, C Pandey, ... Materials Today Communications 37, 107552 , 2023 2023 Citations: 48
Study on microstructure-property relationship of Inconel 617 alloy/304L SS steel dissimilar welds joint A Kumar, K Guguloth, SM Pandey, D Fydrych, S Sirohi, C Pandey Metallurgical and Materials Transactions A 54 (10), 3844-3870 , 2023 2023 Citations: 42
P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: solidification mechanism, microstructure, mechanical properties and residual stresses A Kumar, SM Pandey, S Sirohi, D Fydrych, C Pandey Heliyon 9 (8) , 2023 2023 Citations: 41
Characterization of structure-property relationship of martensitic P91 and high alloy ferritic austenitic F69 steel S Sirohi, C Pandey, A Goyal International Journal of Pressure Vessels and Piping 188, 104179 , 2020 2020 Citations: 38
A review on mechanical properties of coir based composites V Goyat, G Ghangas, S Sirohi, A Kumar, J Nain Materials Today: Proceedings 62, 1738-1745 , 2022 2022 Citations: 37
Microstructure and mechanical properties of a dissimilar metal welded joint of Inconel 617 and P92 steel with Inconel 82 buttering layer for AUSC boiler application A Kumar, S Sirohi, M Singh, D Fydrych, C Pandey International Journal of Pressure Vessels and Piping 209, 105196 , 2024 2024 Citations: 36
Role of heat-treatment and filler on structure-property relationship of dissimilar welded joint of P22 and F69 steel S Sirohi, C Pandey, A Goyal Fusion Engineering and Design 159, 111935 , 2020 2020 Citations: 36
Fracture behaviour of crept P91 welded sample for different post weld heat treatments condition C Pandey, MM Mahapatra, P Kumar, S Sirohi Engineering Failure Analysis 95, 18-29 , 2019 2019 Citations: 33
Impact of laser beam welding on mechanical behaviour of 2.25 Cr–1Mo (P22) steel S Sirohi, SM Pandey, V Tiwari, D Bhatt, D Fydrych, C Pandey International Journal of Pressure Vessels and Piping 201, 104867 , 2023 2023 Citations: 32
Role of the Ni-based filler composition on microstructure and mechanical behavior of the dissimilar welded joint of P22 and P91 steel S Kumar, S Sirohi, RS Vidyarthy, A Gupta, C Pandey International Journal of Pressure Vessels and Piping 193, 104473 , 2021 2021 Citations: 32
Pulsed current GTAW Inconel 625/AISI 304 L steel dissimilar joint: Microstructure and mechanical properties A Kumar, A Singhal, S Sirohi, D Fydrych, C Pandey Journal of Constructional Steel Research 231, 109602 , 2025 2025 Citations: 29
Selection of electrode material for Inconel 617/P92 steel SMAW dissimilar welds A Kumar, SM Pandey, A Bhattacharyya, D Fydrych, S Sirohi, C Pandey Journal of Pressure Vessel Technology 145 (5), 051503 , 2023 2023 Citations: 29