|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Effect of Thermal Aging on Impact Toughness of Electron Beam Welded AISI 316 Stainless Steel
||Arun Kumar, Sandeep Singh Sandhu, Beant Singh
|On-Site Speaker (Planned)
||Sandeep Singh Sandhu
Thick section of AISI 316 SS are widely used in jet engines, furnace parts etc. because of its corrosion and pitting resistance properties at high working temperature. In this paper, single pass square butt welding of 18mm thick plates, using electron beam welding at constant accelerating voltage 150 kV, beam current 90 mA, welding speed 600 mm/min and beam oscillation in circular pattern was investigated. The impact toughness and metallurgical properties in as welded condition and after thermal aging at 750°C for 24 hours were also investigated.The full penetration was achieved in single pass by optimizing the welding parameters. The results showed that welding of plates without filler metal lead to defect free welds. The average impact toughness at cryogenic temperature (-40°C) in as welded samples was recorded as 284J and after aged at 750°C for 24 hours it reduced to 180J.