Characterization of Microstructure and Mechanical Properties of Inconel 625 and AISI 304 Dissimilar Weldments

• Published in: ISIJ International Vol. 54; no. 4; pp. 900 - 908
• Main Authors: Ramkumar, Kasinath Devendranath, Mithilesh, Parvateneni, Varun, Digumarthi, Reddy, Ajay Reddy Gopi, Arivazhagan, Natarajan, Narayanan, Sockalingam, Kumar, Kesavan Gokul
• Format: Journal Article
• Language: English
• Published: Tokyo The Iron and Steel Institute of Japan 01.01.2014; Iron and Steel Institute of Japan
• Subjects: alloy 625; Applied sciences; austenitic stainless steel AISI 304; Exact sciences and technology; filler metal; gas tungsten arc welding; Joining, thermal cutting: metallurgical aspects; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; pulsed current gas tungsten arc welding; Welding; filler metal; Austenitic stainless steel; Nickel base alloys; Pulsed current; Inconel; Filler material; Mechanical properties; pulsed current gas tungsten arc welding; Arc welding; austenitic stainless steel AISI 304; Stainless steel-304; alloy 625; Austenitic steel; Stainless steel; Microstructure; GTA welding; gas tungsten arc welding
• ISSN: 0915-1559; 1347-5460
• DOI: 10.2355/isijinternational.54.900

This investigation has been performed to characterize the microstructure and mechanical properties of the GTA and PCGTA welded dissimilar combinations of Inconel 625 superalloy and AISI 304 austenitic stainless steel. These welds were obtained by employing ERNiCrMo-3 filler metal. The weldments were characterized by the combined techniques of optical microscopy and SEM/EDAX analysis. Hardness and tensile studies were conducted to assess the mechanical properties of the weldments. Tensile studies showed that the fracture had occurred at the parent metal of AISI 304 side in both the cases.